12991987008

Names of 12991987008

• Cardinal: 12991987008 can be written as Twelve billion, nine hundred ninety-one million, nine hundred eighty-seven thousand and eight.

Scientific notation

• Scientific notation: 1.2991987008 × 10¹⁰

Factors of 12991987008

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 102

Divisors of 12991987008

• Number of divisors d(n): 1344
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 13 14 16 18 21 22 24 26 27 28 29 32 33 36 37 39 42 44 48 49 52 54 56 58 63 64 66 72 74 77 78 84 87 88 91 96 98 99 104 108 111 112 116 117 126 132 143 144 147 148 154 156 168 174 176 182 189 192 196 198 203 208 216 222 224 231 232 234 252 259 261 264 273 286 288 294 296 297 308 312 319 333 336 348 351 352 364 377 378 392 396 406 407 416 429 432 441 444 448 462 464 468 481 504 518 522 528 539 546 572 576 588 592 594 609 616 624 637 638 666 672 693 696 702 704 728 754 756 777 783 784 792 812 814 819 832 858 864 882 888 924 928 936 957 962 999 1001 1008 1036 1044 1056 1073 1078 1092 1131 1144 1176 1184 1188 1218 1221 1232 1248 1274 1276 1287 1323 1332 1344 1386 1392 1404 1421 1443 1456 1508 1512 1554 1566 1568 1584 1617 1624 1628 1638 1716 1728 1764 1776 1813 1827 1848 1856 1872 1911 1914 1924 1998 2002 2016 2072 2079 2088 2112 2146 2156 2184 2233 2262 2288 2331 2352 2368 2376 2436 2442 2457 2464 2496 2548 2552 2574 2639 2646 2664 2772 2784 2808 2842 2849 2871 2886 2912 3003 3016 3024 3108 3132 3136 3168 3219 3234 3248 3256 3276 3367 3393 3432 3528 3552 3626 3654 3663 3696 3744 3822 3828 3848 3861 3996 4004 4032 4144 4147 4158 4176 4263 4292 4312 4329 4368 4466 4524 4576 4662 4704 4752 4851 4872 4884 4914 4928 5096 5104 5148 5278 5291 5292 5328 5439 5481 5544 5568 5616 5684 5698 5733 5742 5772 5824 6006 6032 6048 6216 6264 6336 6438 6468 6496 6512 6552 6699 6734 6786 6864 6993 7007 7056 7104 7252 7308 7326 7392 7488 7511 7644 7656 7696 7722 7917 7992 8008 8288 8294 8316 8352 8526 8547 8584 8613 8624 8658 8736 8932 9009 9048 9152 9324 9408 9504 9657 9702 9744 9768 9828 10101 10179 10192 10208 10296 10556 10582 10584 10656 10878 10962 10989 11088 11232 11368 11396 11466 11484 11544 11803 12012 12064 12096 12432 12441 12528 12789 12876 12936 12987 12992 13024 13104 13398 13468 13572 13728 13949 13986 14014 14112 14504 14553 14616 14652 14784 15022 15288 15312 15392 15444 15631 15834 15873 15984 16016 16317 16576 16588 16632 16704 17052 17094 17168 17199 17226 17248 17316 17472 17864 18018 18096 18473 18648 19008 19314 19404 19488 19536 19656 19943 20097 20202 20358 20384 20416 20592 21021 21112 21164 21168 21312 21756 21924 21978 22176 22464 22533 22736 22792 22932 22968 23088 23569 23606 23751 24024 24128 24864 24882 25056 25578 25641 25752 25872 25974 26048 26208 26796 26936 27027 27144 27456 27898 27972 28028 28224 28971 29008 29029 29106 29232 29304 30044 30303 30576 30624 30784 30888 31262 31668 31746 31968 32032 32634 33176 33264 34104 34188 34336 34398 34452 34496 34632 35409 35728 36036 36192 36946 37037 37296 37323 38367 38628 38808 38976 39072 39312 39886 40194 40404 40716 40768 41184 41847 42042 42224 42328 42336 43512 43848 43956 44352 45066 45472 45584 45864 45936 46176 46893 47138 47212 47502 47619 48048 48951 49728 49764 50112 51156 51282 51504 51744 51948 52416 52577 53592 53872 54054 54288 55419 55796 55944 56056 57942 58016 58058 58212 58464 58608 59829 60088 60291 60606 61152 61248 61776 62524 63063 63336 63492 63936 64064 65268 66352 66528 67599 68208 68376 68672 68796 68904 69264 70707 70818 71253 71456 72072 72384 73892 74074 74592 74646 76734 76923 77256 77616 78144 78624 79772 80388 80808 81432 82368 82621 83694 84084 84448 84656 84672 87024 87087 87696 87912 90132 90909 90944 91168 91728 91872 92352 93786 94276 94424 95004 95238 96096 97643 97902 99528 102312 102564 103008 103488 103896 105154 106227 107184 107744 108108 108576 110838 111111 111592 111888 111969 112112 115884 116032 116116 116424 116928 117216 119658 120176 120582 121212 122304 123552 125048 125541 126126 126672 126984 130536 132704 133056 135198 136416 136752 137592 137808 138528 140679 141414 141636 142506 142857 142912 144144 147784 148148 149184 149292 153439 153468 153846 154512 155232 157248 157731 159544 160776 161616 162864 165242 166257 167388 168168 168896 169312 174048 174174 175392 175824 179487 180264 181818 182336 183456 183744 187572 188552 188848 189189 190008 190476 192192 195286 195804 199056 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7365072 7518511 7571088 7931616 7980336 7999992 8034624 8202012 8285706 8296288 8360352 8592584 8615376 8923068 9003456 9142848 9253552 9333324 9373728 9666657 9753744 9820096 10094784 10181808 10197792 10410246 10545444 10640448 10666656 10936016 10972962 11047608 11356632 11487168 11897424 12051936 12108096 12303018 12444432 12540528 12888876 12979008 13004992 13505184 13575744 13880328 13999986 14060592 14630616 14730144 15037022 15142176 15615369 15863232 15960672 15999984 16404024 16571412 16592576 16720704 17185168 17230752 17846136 18454527 18507104 18666648 18747456 19333314 19507488 20363616 20395584 20820492 21090888 21333312 21872032 21945924 22095216 22555533 22713264 23794848 24103872 24606036 24888864 25081056 25777752 27010368 27760656 27999972 28121184 28999971 29261232 29460288 30074044 30284352 31230738 31921344 31999968 32808048 33142824 34370336 34461504 35692272 36909054 37014208 37333296 38666628 39014976 40727232 41640984 42181776 43744064 43891848 44190432 45111066 45426528 47589696 49212072 49777728 50162112 51555504 55521312 55999944 56242368 57999942 58522464 60148088 62461476 63999936 65616096 66285648 67666599 68740672 71384544 73818108 74666592 77333256 83281968 84363552 87783696 88380864 90222132 90853056 98424144 103111008 111042624 111999888 115999884 117044928 120296176 124922952 131232192 132571296 135333198 142769088 147636216 149333184 154666512 166563936 168727104 175567392 180444264 196848288 202999797 206222016 223999776 231999768 240592352 249845904 265142592 270666396 295272432 309333024 333127872 351134784 360888528 393696576 405999594 447999552 463999536 481184704 499691808 541332792 590544864 618666048 721777056 811999188 927999072 999383616 1082665584 1181089728 1443554112 1623998376 1855998144 2165331168 3247996752 4330662336 6495993504 12991987008
• Sum of all divisors σ(n): 55456531200
• Sum of proper divisors (its aliquot sum) s(n): 42464544192
• 12991987008 is an abundant number, because the sum of its proper divisors (42464544192) is greater than itself. Its abundance is 29472557184

Bases of 12991987008

• Binary: 1100000110011000011111110101000000₂
• Hexadecimal: 0x30661FD40
• Base-36: 5YV3DC0

Squares and roots of 12991987008

• 12991987008 squared (12991987008²) is 168791726416040792064
• 12991987008 cubed (12991987008³) is 2192939916655092373293517504512
• The square root of 12991987008 is 113982.3977989585
• The cube root of 12991987008 is 2350.8514800663

Scales and comparisons

• 12,991,987,008 seconds is equal to 413 years, 5 weeks, 3 days, 5 hours, 16 minutes, 48 seconds.
• To count from 1 to 12,991,987,008 would take you about eight hundred twenty-six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 12991987008 cubic inches would be around 195.9 feet tall.

Recreational maths with 12991987008

• 12991987008 backwards is 80078919921
• 12991987008 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12991987008's digits is 54
• More coming soon!