81297621892800

Names of 81297621892800

• Cardinal: 81297621892800 can be written as Eighty-one trillion, two hundred ninety-seven billion, six hundred twenty-one million, eight hundred ninety-two thousand, eight hundred.

Scientific notation

• Scientific notation: 8.12976218928 × 10¹³

Factors of 81297621892800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3053416

Divisors of 81297621892800

• Number of divisors d(n): 378
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 43 45 48 50 60 64 72 75 80 86 90 96 100 120 129 144 150 160 172 180 192 200 215 225 240 258 288 300 320 344 360 387 400 430 450 480 516 576 600 645 688 720 774 800 860 900 960 1032 1075 1200 1290 1376 1440 1548 1600 1720 1800 1849 1935 2064 2150 2400 2580 2752 2880 3096 3225 3440 3600 3698 3870 4128 4300 4800 5160 5547 6192 6450 6880 7200 7396 7740 8256 8600 9245 9675 10320 11094 12384 12900 13760 14400 14792 15480 16641 17200 18490 19350 20640 22188 24768 25800 27735 29584 30960 33282 34400 36980 38700 41280 44376 46225 51600 55470 59168 61920 66564 68800 73960 77400 83205 88752 92450 103200 110940 118336 123840 133128 138675 147920 154800 166410 177504 184900 206400 221880 266256 277350 295840 309600 332820 355008 369800 416025 443760 532512 554700 591680 619200 665640 739600 832050 887520 1065024 1109400 1331280 1479200 1664100 1775040 2218800 2662560 2958400 3053363 3328200 4437600 5325120 6106726 6656400 8875200 9160089 12213452 13312800 15266815 18320178 24426904 26625600 27480267 30533630 36640356 45800445 48853808 54960534 61067260 73280712 76334075 91600890 97707616 109921068 122134520 131294609 137401335 146561424 152668150 183201780 195415232 219842136 229002225 244269040 262589218 274802670 293122848 305336300 366403560 393883827 439684272 458004450 488538080 525178436 549605340 586245696 610672600 656473045 687006675 732807120 787767654 879368544 916008900 977076160 1050356872 1099210680 1181651481 1221345200 1312946090 1374013350 1465614240 1575535308 1758737088 1832017800 1969419135 2100713744 2198421360 2363302962 2442690400 2625892180 2748026700 2931228480 3151070616 3282365225 3664035600 3938838270 4201427488 4396842720 4726605924 4885380800 5251784360 5496053400 5645668187 5908257405 6302141232 6564730450 7328071200 7877676540 8402854976 8793685440 9453211848 9847095675 10503568720 10992106800 11291336374 11816514810 12604282464 13129460900 14656142400 15755353080 16937004561 18906423696 19694191350 21007137440 21984213600 22582672748 23633029620 25208564928 26258921800 28228340935 29541287025 31510706160 33874009122 37812847392 39388382700 42014274880 43968427200 45165345496 47266059240 50811013683 52517843600 56456681870 59082574050 63021412320 67748018244 75625694784 78776765400 84685022805 90330690992 94532118480 101622027366 105035687200 112913363740 118165148100 126042824640 135496036488 141141704675 157553530800 169370045610 180661381984 189064236960 203244054732 210071374400 225826727480 236330296200 254055068415 270992072976 282283409350 315107061600 338740091220 361322763968 378128473920 406488109464 423425114025 451653454960 472660592400 508110136830 541984145952 564566818700 630214123200 677480182440 812976218928 846850228050 903306909920 945321184800 1016220273660 1083968291904 1129133637400 1270275342075 1354960364880 1625952437856 1693700456100 1806613819840 1890642369600 2032440547320 2258267274800 2540550684150 2709920729760 3251904875712 3387400912200 4064881094640 4516534549600 5081101368300 5419841459520 6774801824400 8129762189280 9033069099200 10162202736600 13549603648800 16259524378560 20324405473200 27099207297600 40648810946400 81297621892800
• Sum of all divisors σ(n): 295827103919412
• Sum of proper divisors (its aliquot sum) s(n): 214529482026612
• 81297621892800 is an abundant number, because the sum of its proper divisors (214529482026612) is greater than itself. Its abundance is 133231860133812

Bases of 81297621892800

• Binary: 10010011111000010010011110111111011111011000000₂
• Hexadecimal: 0x49F093DFBEC0
• Base-36: STFM11680

Squares and roots of 81297621892800

• 81297621892800 squared (81297621892800²) is 6609303325424673854691840000
• 81297621892800 cubed (81297621892800³) is 537320642725200808026495097581514752000000
• The square root of 81297621892800 is 9016519.3890325551
• The cube root of 81297621892800 is 43320.4155519615

Scales and comparisons

• 81,297,621,892,800 seconds is equal to 2,585,012 years, 47 weeks, 20 hours.
• To count from 1 to 81,297,621,892,800 would take you about six million, four hundred sixty-two thousand, five hundred thirty-two 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 81297621892800 cubic inches would be around 3610 feet tall.

Recreational maths with 81297621892800

• 81297621892800 backwards is 00829812679218
• The number of decimal digits it has is: 14
• The sum of 81297621892800's digits is 63
• More coming soon!