81976931712

Names of 81976931712

• Cardinal: 81976931712 can be written as Eighty-one billion, nine hundred seventy-six million, nine hundred thirty-one thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 8.1976931712 × 10¹⁰

Factors of 81976931712

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 949

Divisors of 81976931712

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 31 32 36 39 48 52 54 62 64 71 72 78 93 96 104 108 117 124 128 142 144 156 186 192 208 213 216 234 248 279 284 288 312 351 372 384 403 416 426 432 468 496 558 568 576 624 639 702 744 806 829 832 837 852 864 923 936 992 1116 1136 1152 1209 1248 1278 1404 1488 1612 1658 1664 1674 1704 1728 1846 1872 1917 1984 2201 2232 2272 2418 2487 2496 2556 2769 2808 2976 3224 3316 3348 3408 3456 3627 3692 3744 3834 3968 4402 4464 4544 4836 4974 4992 5112 5538 5616 5952 6448 6603 6632 6696 6816 7254 7384 7461 7488 7668 8307 8804 8928 9088 9672 9948 10224 10777 10881 11076 11232 11904 12896 13206 13264 13392 13632 14508 14768 14922 14976 15336 16614 17608 17856 19344 19809 19896 20448 21554 21762 22152 22383 22464 24921 25699 25792 26412 26528 26784 27264 28613 29016 29536 29844 30672 32331 33228 35216 35712 38688 39618 39792 40896 43108 43524 44304 44766 44928 49842 51398 51584 52824 53056 53568 57226 58032 58859 59072 59427 59688 61344 64662 66456 70432 77097 77376 79236 79584 81792 85839 86216 87048 88608 89532 96993 99684 102796 105648 106112 107136 114452 116064 117718 118144 118854 119376 122688 129324 132912 140864 154194 154752 158472 159168 171678 172432 174096 176577 177216 179064 193986 199368 205592 211296 228904 231291 232128 235436 237708 238752 245376 257517 258648 265824 281728 290979 308388 316944 318336 334087 343356 344864 348192 353154 354432 358128 387972 398736 411184 422592 457808 462582 464256 470872 475416 477504 515034 517296 529731 531648 581958 616776 633888 668174 686712 689728 693873 696384 706308 716256 765167 772551 775944 797472 822368 845184 915616 925164 941744 950832 955008 1002261 1030068 1034592 1059462 1063296 1163916 1233552 1267776 1336348 1373424 1379456 1387746 1392768 1412616 1432512 1530334 1545102 1551888 1589193 1594944 1644736 1824629 1831232 1850328 1883488 1901664 2004522 2060136 2069184 2118924 2295501 2327832 2467104 2535552 2672696 2746848 2775492 2825232 2865024 3006783 3060668 3090204 3103776 3178386 3189888 3289472 3649258 3662464 3700656 3766976 3803328 4009044 4120272 4138368 4237848 4591002 4655664 4934208 5345392 5473887 5493696 5550984 5650464 6013566 6121336 6180408 6207552 6356772 6886503 7298516 7401312 7533952 7606656 8018088 8240544 8475696 9020349 9182004 9311328 9868416 10690784 10947774 10987392 11101968 11300928 12027132 12242672 12360816 12415104 12713544 13773006 14597032 14802624 16036176 16421661 16481088 16951392 18040698 18364008 18622656 20659509 21381568 21895548 22203936 22601856 23720177 24054264 24485344 24721632 25427088 27546012 29194064 29605248 32072352 32843322 32962176 33902784 36081396 36728016 37245312 41319018 42763136 43791096 44407872 47440354 48108528 48970688 49264983 49443264 50854176 55092024 58388128 64144704 65686644 67805568 71160531 72162792 73456032 82638036 87582192 88815744 94880708 96217056 97941376 98529966 98886528 101708352 110184048 116776256 128289408 131373288 142321062 144325584 146912064 165276072 175164384 189761416 192434112 197059932 203416704 213481593 220368096 233552512 262746576 284642124 288651168 293824128 330552144 350328768 379522832 384868224 394119864 426963186 440736192 525493152 569284248 577302336 640444779 661104288 700657536 759045664 788239728 853926372 881472384 1050986304 1138568496 1154604672 1280889558 1322208576 1518091328 1576479456 1707852744 2101972608 2277136992 2561779116 2644417152 3036182656 3152958912 3415705488 4554273984 5123558232 6305917824 6831410976 9108547968 10247116464 13662821952 20494232928 27325643904 40988465856 81976931712
• Sum of all divisors σ(n): 273079296000
• Sum of proper divisors (its aliquot sum) s(n): 191102364288
• 81976931712 is an abundant number, because the sum of its proper divisors (191102364288) is greater than itself. Its abundance is 109125432576

Bases of 81976931712

• Binary: 1001100010110001101001011010110000000₂
• Hexadecimal: 0x131634B580
• Base-36: 11NQY5C0

Squares and roots of 81976931712

• 81976931712 squared (81976931712²) is 6720217332913911250944
• 81976931712 cubed (81976931712³) is 550902797390082472593464783536128
• The square root of 81976931712 is 286316.1394542751
• The cube root of 81976931712 is 4344.0740502013

Scales and comparisons

• 81,976,931,712 seconds is equal to 2,606 years, 31 weeks, 6 days, 1 hour, 55 minutes, 12 seconds.
• To count from 1 to 81,976,931,712 would take you about five thousand, two hundred thirteen 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 81976931712 cubic inches would be around 362 feet tall.

Recreational maths with 81976931712

• 81976931712 backwards is 21713967918
• 81976931712 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81976931712's digits is 54
• More coming soon!