1000000000000
List of numbers Integers ←100101102103104105106107108109101010111012
Cardinal	One trillion (short scale) One billion (long scale) One thousand billion One million million[1]
Ordinal	One trillionth (short scale) One billionth (long scale)
Factorization	212 512
Divisors	169 total
Greek numeral	${\displaystyle \stackrel{\alpha }{\mathrm{M}}}$
Roman numeral	M̅̅̅ (M with three overlines)
Greekprefix	tera-
Binary	11101000110101001010010100010000000000002
Ternary	101121210112011021021110013
Senary	20432210103013446
Octal	164324512100008
Duodecimal	141981B8785412
Hexadecimal	E8D4A5100016
Base 36	CRE66I9S36
Arabic	١٠٠٠٠٠٠٠٠٠٠٠٠
Bengali	১০০০০০০০০০০০০
Chinese	万亿 (standard), 兆 (myriad scale)
Devanagari	१००००००००००००
Japanese	兆
Khmer	១០០០០០០០០០០០០ (ពាន់ពាន់លាន)
Korean	조
Tamil	௲௲௲௲, க௦௦௦௦௦௦௦௦௦௦௦௦
Thai	๑๐๐๐๐๐๐๐๐๐๐๐๐ (ล้านล้าน)

1,000,000,000,000 (one trillion on the short scale;one billion on the long scale; one thousandbillion; one millionmillion) is thenatural number following999,999,999,999 and preceding 1,000,000,000,001. It is known as 10 kharab, 1000 arab, or 1 lakh crore in theIndian numbering system.

The wordtrillion is borrowed from Frenchtrillion, which is fromtri- ("three") +-illion. It can be abbreviated astril,tln,tn, or simplyt. Originally inBritish English, the word "trillion" referred tomillion million millions (while "billion" referred to million millions, which is equal to trillion inAmerican English). However, to many people, the word refers to one thousand billion (1,000,000,000,000) in the present day.

1,000,000,000,000 has the following properties and usage:

• It iseven,composite,abundant,polite,practical,frugal, andregular. It is also aperfect power and aharshad number.
• It is written inscientific notation as1 × 10¹² or10¹² (1E+12 or simply1E12 inE notation).
• It is thesquare of1,000,000, thecube of10,000, thefourth power of1,000, and thesixth power of100.
• It has a total of 169 divisors (156 even, 13 odd), whose geometric mean is1,000,000. All divisors are displayed below:

1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3125, 3200, 4000, 4096, 5000, 5120, 6250, 6400, 8000, 10000, 10240, 12500, 12800, 15625, 16000, 20000, 20480, 25000, 25600, 31250, 32000, 40000, 50000, 51200, 62500, 64000, 78125, 80000, 100000, 102400, 125000, 128000, 156250, 160000, 200000, 250000, 256000, 312500, 320000, 390625, 400000, 500000, 512000, 625000, 640000, 781250, 800000, 1000000, 1250000, 1280000, 1562500, 1600000, 1953125, 2000000, 2500000, 2560000, 3125000, 3200000, 3906250, 4000000, 5000000, 6250000, 6400000, 7812500, 8000000, 9765625, 10000000, 12500000, 12800000, 15625000, 16000000, 19531250, 20000000, 25000000, 31250000, 32000000, 39062500, 40000000, 48828125, 50000000, 62500000, 64000000, 78125000, 80000000, 97656250, 100000000, 125000000, 156250000, 160000000, 195312500, 200000000, 244140625, 250000000, 312500000, 320000000, 390625000, 400000000, 488281250, 500000000, 625000000, 781250000, 800000000, 976562500, 1000000000, 1250000000, 1562500000, 1600000000, 1953125000, 2000000000, 2500000000, 3125000000, 3906250000, 4000000000, 5000000000, 6250000000, 7812500000, 8000000000, 10000000000, 12500000000, 15625000000, 20000000000, 25000000000, 31250000000, 40000000000, 50000000000, 62500000000, 100000000000, 125000000000, 200000000000, 250000000000, 500000000000, 1000000000000

• The sum of all divisors of 10¹², including itself, is 2,499,694,822,171.
• It has anEuler totient of 400,000,000,000, and analiquot sum of 1,499,694,822,171.
• There are a total of 37,607,912,018 positiveprimes less than 10¹².^[2]
• Below is the list of basic calculations of 1,000,000,000,000:

	Multiplication ${\displaystyle \text{1,000,000,000,000 }\times \text{ x}}$	Division ${\displaystyle \text{1,000,000,000,000 }÷\text{ x}}$	Exponentiation ${\displaystyle {\text{1,000,000,000,000}}^{\text{x}}}$	nth root ${\displaystyle \sqrt[\text{x}]{\text{1,000,000,000,000}}}$
2	2,000,000,000,000	500,000,000,000	1024	1,000,000
3	3,000,000,000,000	333,333,333,333.3	1036	10,000
4	4,000,000,000,000	250,000,000,000	1048	1,000
5	5,000,000,000,000	200,000,000,000	1060	≈251.188643151
6	6,000,000,000,000	166,666,666,666.6	1072	100
7	7,000,000,000,000	142,857,142,857.142857	1084	≈51.7947467923
8	8,000,000,000,000	125,000,000,000	1096	≈31.6227766017
9	9,000,000,000,000	111,111,111,111.1	10108	≈21.5443469003
10	10,000,000,000,000	100,000,000,000	10120	≈15.8489319246

• Forphysical quantities, themetric prefixtera (symbolT) indicates 1,000,000,000,000 times the base unit. For example, 10¹²bits of data is called aterabit, 10¹²joules of energy is called aterajoule, and 10¹²watts of power is called aterawatt.
• The computing performance of 10¹²floating point operations per second is known asterascale computing. It is the performance of severalsupercomputers, such asNEC SX-4,^[3] Intel'sASCI Red, andiPhone 15 Pro September 2023A17 Pro processor.

Some comparisons below give a sense of how large 1,000,000,000,000 (10¹²) is, according to current evidence.

• 10¹² seconds—aterasecond—is about 31 thousand years.Homo sapiens were living as 'hunter-gatherers' 10¹² seconds ago.
• 10¹² minutes (about 1.9 million years) ago, the human speciesHomo erectus was in existence.
• 10¹² hours (about 114 million years) ago,Late Cretaceous dinosaurs dominated the land, andgiant squids thrived in the oceans.
• 10¹² days (about 2.74 billion years) ago, Earth was an alien world where only single-celledmicroorganisms existed.
• 10¹² months (about 83 billion years) ago,Milky Way did not exist. 10¹² months from now, the Moon may collide with the Earth or be torn apart to form an orbital ring, if both have not already been destroyed.
• 10¹² years—ateraannus—is 70 times theage of the universe.

• 10¹² inches is about 15 million miles (24 million kilometres), approximately 1/6th the distance from the Earth to the Sun.
• 10¹² metres (aterametre) is over six times the distance from the Earth to the Sun. It is the estimated diameter ofBetelgeuse, a red supergiant star.
• 10¹² kilometres (apetametre) is about 1/10th alight-year.
• A light-year is approximately 5,878,600,000,000 miles.

• 10¹² square inches is approximately the total area ofSaint Lucia, an island country in the eastern Caribbean.
• 10¹² square feet is larger than the total area ofPortugal.
• 10¹² square metres is approximately the total area ofEthiopia, the 26th largest country on Earth.
• 10¹² square kilometres is almost 2,000 times the Earth's total surface area.

• If 10¹² cubic metres of water were spread evenly over the Moon's surface, it would create a layer of water approximately 2.6 centimetres deep.
• 10¹² grains of sand would occupy a volume of about 0.5 cubic metres.

• Spain's GDP in 2024 is approximately $1.72 trillion.^[4]

• An average-sized mountain weighs about 10¹² kilograms.
• Andromeda Galaxy, Milky Way's neighbor, contains about 10¹² stars.
• It is estimated that there are around 2 trillion galaxies in theobservable universe.^[5][6]
• There were around 3 trillion trees on Earth in 2015.^[7]
• Scientists have estimated that the number of fish in the ocean is around 3.5 trillion.^[8]
• The surface of the human body houses roughly 10¹² bacteria.^[9]

• 1,000,000,000,039 : smallest 13-digitprime number^[10]
• 1,000,002,000,001 = 1000001², palindromic square
• 1,000,001,326,005 : smallest 13-digittriangular number, 1,414,214th triangular number^[11]
• 1,004,006,004,001 = 1002001² = 1001⁴, palindromic fourth power
• 1,061,520,150,601 = 1030301² = 10201³ = 101⁶
• 1,062,991,989,013 : number of square (0,1)-matrices without zero rows and with exactly 11 entries equal to 1^[12]
• 1,070,710,724,173 : 153rdMarkov number^[13]
• 1,099,511,627,776 = 256⁵ = 16¹⁰ = 4²⁰ = 2⁴⁰, binary approximation of metric prefix tera
• 1,099,511,629,376 :Leyland number^[14] using 2 & 40 (2⁴⁰ + 40²)
• 1,099,511,787,776 : Leyland number using 4 & 20 (4²⁰ + 20⁴)
• 1,111,111,111,111 :repunit
• 1,124,388,064,800 : 67thsuperabundant number^[15]
• 1,125,000,750,000 : sum of first 1,500,000 natural numbers
• 1,141,246,682,444 = 2²×11^11[16]
• 1,184,065,449,986 : 154th Markov number
• 1,202,590,842,879 : 35thWoodall number^[17]
• 1,226,280,710,981 : 15thalternating factorial^[18]
• 1,289,904,147,324 : 24thCatalan number^[19]
• 1,307,674,368,000 = 15!
• 1,307,674,368,120 : 15thfactoriangular number^[20]
• 1,338,193,159,771 : number ofposets with 14 unlabeled elements^[21]
• 1,373,119,300,369 : number of series-reduced planted trees with 45 nodes^[22]
• 1,419,855,914,607 : 38thWedderburn-Etherington number^[23]
• 1,427,933,269,321 : 155th Markov number
• 1,466,024,067,850 : number of 48-bead necklaces (turning over is allowed) where complements are equivalent^[24]
• 1,489,877,926,680 : 5th 8-dimensional Catalan number^[25]
• 1,490,542,435,045 : 156th Markov number
• 1,497,207,322,930 : number of 47-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed^[26]
• 1,499,694,822,171 :aliquot sum of 1,000,000,000,000
• 1,513,744,654,945 : 33rdPell number,^[27] 157th Markov number
• 1,523,548,331,041 = 1234321² = 1111⁴
• 1,548,008,755,920 : 60thFibonacci number
• 1,563,135,350,013 : number of (unordered, unlabeled) rooted trimmedtrees with 36 nodes^[28]
• 1,618,362,158,587 : 19thSchröder–Hipparchus number^[29]
• 1,697,385,471,211 : 30thMotzkin number^[30]
• 1,706,111,387,068 : number of centered hydrocarbons with 37 carbon atoms^[31]
• 1,722,099,665,665 : 158th Markov number
• 1,915,868,454,737 : 159th Markov number
• 1,927,522,396,800 : 68th superabundant number
• 1,934,197,506,555 : 48threpfigit^[32]
• 1,961,990,553,600 = 24!!

• 2,000,001,000,000 : sum of first 2,000,000 natural numbers
• 2,076,871,684,802 : 160th Markov number
• 2,122,553,644,686 : number of secondary structures of RNA molecules with 35 nucleotides^[33]
• 2,135,248,790,338 : 161st Markov number
• 2,156,735,837,173 : 162nd Markov number
• 2,222,222,222,222 :repdigit
• 2,248,776,129,600 : 69th superabundant number, 18thsuperior highly composite number^[34]
• 2,262,366,343,746 : number of trees with 35 unlabeled nodes^[35]
• 2,473,901,162,495 : 36th Woodall number
• 2,499,694,822,171 : sum of all divisors of 1,000,000,000,000
• 2,504,730,781,961 : 61st Fibonacci number, 163rd Markov number
• 2,541,865,828,329 = 9¹³ = 3²⁶
• 2,541,865,845,905 : Leyland number using 3 & 26 (3²⁶ + 26³)
• 2,552,470,327,702 : Leyland number using 9 & 13 (9¹³ + 13⁹)
• 2,557,227,044,764 : number of freepolyominoes with 25 cells^[36]
• 2,821,109,907,456 = 1679616² = 1296⁴ = 36⁸ = 6¹⁶
• 2,821,126,684,672 : Leyland number using 6 & 16 (6¹⁶ + 16⁶)
• 2,872,202,028,517 : number of 49-bead necklaces (turning over is allowed) where complements are equivalent
• 2,906,166,827,065 : number of series-reduced planted trees with 46 nodes
• 2,932,031,358,484 : number of 48-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 2,959,365,073,955 ~ 10^(3*π+3), rounded-up pi-illion^[37]

• 3,099,893,879,221 : 164th Markov number
• 3,125,001,250,000 : sum of first 2,500,000 natural numbers
• 3,204,941,750,802 : number of positive primes less than 10^14[2]
• 3,236,724,317,174 : 19thSchröder number^[38]
• 3,257,843,882,624 : 23rdtelephone number^[39]
• 3,267,653,834,825 : 165th Markov number
• 3,333,333,333,333 :repdigit
• 3,373,164,194,400 : 70th superabundant number
• 3,389,524,479,050 : 39th Wedderburn-Etherington number
• 3,494,391,117,164 : number of signed trees with 22 nodes^[40]
• 3,512,479,453,921 = 1874161² = 1369⁴ = 37⁸
• 3,654,502,875,938 : 34th Pell number
• 3,809,950,977,008 : 16th logarithmic number^[41]
• 3,814,697,265,625 = 1953125² = 25⁹ = 5¹⁸
• 3,814,699,155,193 : Leyland number using 5 & 18 (5¹⁸ + 18⁵)
• 3,899,735,407,806 : number of (unordered, unlabeled) rooted trimmed trees with 37 nodes

• 4,052,739,537,881 : 62nd Fibonacci number
• 4,360,711,162,037 : 166th Markov number
• 4,444,444,444,444 :repdigit
• 4,492,268,106,137 : number of centered hydrocarbons with 38 carbon atoms
• 4,497,552,259,200 : 71st superabundant number
• 4,500,001,500,000 : sum of first 3,000,000 natural numbers
• 4,508,515,437,145 : 167th Markov number
• 4,643,961,467,965 : 168th Markov number
• 4,658,179,125,600 : 72nd superabundant number
• 4,747,561,509,943 = 16807³ = 343⁵ = 7¹⁵
• 4,747,732,369,318 : Leyland number using 7 & 15 (7¹⁵ + 15⁷)
• 4,859,761,676,391 : 31st Motzkin number
• 4,861,946,401,452 : 25th Catalan number

• 5,085,241,278,463 : 37th Woodall number
• 5,336,735,929,371 : number of secondary structures of RNA molecules with 36 nucleotides
• 5,528,778,008,357 : 169th Markov number
• 5,555,555,555,555 :repdigit
• 5,587,637,513,705 : 170th Markov number
• 5,629,516,646,996 : number of 50-bead necklaces (turning over is allowed) where complements are equivalent
• 5,744,387,279,818 : number of 49-bead binary necklaces with beads of 2 colors where the colors may be swapped but turning over is not allowed
• 5,832,742,205,057 : 19thBell number^[42]

• 6,073,061,476,032 :self-descriptive number in base 12^[43]
• 6,125,001,750,000 : sum of first 3,500,000 natural numbers
• 6,155,434,522,614 : number of series-reduced planted trees with 47 nodes
• 6,226,306,037,178 : number of trees with 36 unlabeled nodes
• 6,557,470,319,842 : 63rd Fibonacci number, 171st Markov number
• 6,666,666,666,666 :repdigit
• 6,746,328,388,800 : 73rd superabundant number
• 6,963,472,309,248 : 4thtaxicab number

• 7,163,627,708,162 : 172nd Markov number
• 7,420,738,134,810 : 12thprimorial^[44]
• 7,625,597,484,987 = 19683³ = 27⁹ = 3²⁷ = 3³³ =³3 =₂3, megafugathree^[45]
• 7,625,597,504,670 : Leyland number using 3 & 27 (3²⁷ + 27³)
• 7,777,777,777,777 :repdigit
• 7,905,853,580,625 = 25!!

• 8,000,002,000,000 : sum of first 4,000,000 natural numbers
• 8,099,766,813,570 : 40th Wedderburn-Etherington number
• 8,115,549,747,397 : 173rd Markov number
• 8,649,755,859,375 = 15¹¹
• 8,756,963,649,152 : 49th repfigit
• 8,759,309,660,445 : 20th Schröder–Hipparchus number
• 8,822,750,406,821 : 35th Pell number, 174th Markov number
• 8,888,888,888,888 :repdigit
• 8,916,100,448,256 = 2985984² = 20736³ = 144⁶ = 12¹²

• 9,210,000,001,000 : 10thautobiographical number^[46]
• 9,316,358,251,200 : 74th superabundant number
• 9,460,730,472,581 : rounded-up length of a light-year in kilometres
• 9,739,810,110,758 : number of (unordered, unlabeled) rooted trimmed trees with 38 nodes^[28]
• 9,787,184,545,081 : 175th Markov number
• 9,918,212,890,625 : 24th 1-automorphic number^[47]
• 9,925,594,216,162 : 176th Markov number
• 9,999,088,822,075 : number of free polyominoes with 26 cells
• 9,999,999,999,971 : largest 13-digit prime number^[48]
• 9,999,999,999,999 : largest 13-digit number,repdigit

• Long and short scales
• Names of large numbers
• Orders of magnitude (numbers)
• Power of 10

• Integers
• Large numbers
• Powers of ten

• Articles with short description
• Short description is different from Wikidata