81399846015466240

Names of 81399846015466240

• Cardinal: 81399846015466240 can be written as Eighty-one quadrillion, three hundred ninety-nine trillion, eight hundred forty-six billion, fifteen million, four hundred sixty-six thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.139984601546624 × 10¹⁶

Factors of 81399846015466240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 13250

Divisors of 81399846015466240

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 4 5 8 10 16 20 23 32 40 46 64 80 92 115 127 128 160 184 230 254 256 320 368 460 508 635 640 736 920 1016 1270 1280 1472 1840 2032 2540 2921 2944 3680 4064 5080 5842 5888 7360 8128 10160 11684 13093 14605 14720 16129 16256 20320 23368 26186 29210 29440 32258 32512 40640 46736 52372 58420 64516 65465 80645 81280 93472 104744 116840 129032 130930 161290 162560 186944 209488 233680 258064 261860 301139 322580 370967 373888 418976 467360 516128 523720 602278 645160 741934 747776 837952 934720 1032256 1047440 1204556 1290320 1483868 1505695 1662811 1675904 1854835 1869440 2064512 2094880 2409112 2580640 2967736 3011390 3325622 3351808 3709670 3738880 4129024 4189760 4818224 5161280 5935472 6022780 6651244 7419340 8314055 8379520 9636448 10322560 11870944 12045560 13302488 14838680 16628110 16759040 19272896 20645120 23741888 24091120 26604976 29677360 33256220 38244653 38545792 47483776 48182240 53209952 59354720 66512440 76489306 77091584 94967552 96364480 106419904 118709440 133024880 152978612 171426649 191223265 192728960 211176997 212839808 237418880 266049760 305957224 342853298 382446530 385457920 422353994 425679616 474837760 532099520 611914448 685706596 764893060 844707988 857133245 1055884985 1064199040 1223828896 1371413192 1529786120 1689415976 1714266490 2111769970 2128398080 2447657792 2742826384 3059572240 3378831952 3428532980 3942812927 4223539940 4857070931 4895315584 5485652768 6119144480 6757663904 6857065960 7885625854 8447079880 9714141862 9790631168 10971305536 12238288960 13515327808 13714131920 15771251708 16894159760 19428283724 19714064635 21771184423 21942611072 24285354655 24476577920 27030655616 27428263840 31542503416 33788319520 38856567448 39428129270 43542368846 43885222144 48570709310 48953155840 54061311232 54856527680 63085006832 67576639040 77713134896 78856258540 87084737692 97141418620 108855922115 109713055360 126170013664 135153278080 155426269792 157712517080 174169475384 194282837240 217711844230 219426110720 252340027328 270306556160 310852539584 315425034160 348338950768 388565674480 435423688460 500737241729 504680054656 621705079168 630850068320 696677901536 777131348960 870847376920 1001474483458 1009360109312 1243410158336 1261700136640 1393355803072 1554262697920 1741694753840 2002948966916 2503686208645 2523400273280 2764940421721 2786711606144 3108525395840 3483389507680 4005897933832 5007372417290 5046800546560 5529880843442 5573423212288 6217050791680 6966779015360 8011795867664 10014744834580 11059761686884 13824702108605 13933558030720 16023591735328 20029489669160 22119523373768 27649404217210 27867116061440 32047183470656 40058979338320 44239046747536 55298808434420 63593629699583 64094366941312 80117958676640 88478093495072 110597616868840 127187259399166 128188733882624 160235917353280 176956186990144 221195233737680 254374518798332 317968148497915 320471834706560 353912373980288 442390467475360 508749037596664 635936296995830 640943669413120 707824747960576 884780934950720 1017498075193328 1271872593991660 1769561869901440 2034996150386656 2543745187983320 3539123739802880 4069992300773312 5087490375966640 8139984601546624 10174980751933280 16279969203093248 20349961503866560 40699923007733120 81399846015466240
• Sum of all divisors σ(n): 205085664849162384
• Sum of proper divisors (its aliquot sum) s(n): 123685818833696144
• 81399846015466240 is an abundant number, because the sum of its proper divisors (123685818833696144) is greater than itself. Its abundance is 42285972818229904

Bases of 81399846015466240

• Binary: 100100001001100001011101010001010100001011111101100000000₂
• Hexadecimal: 0x12130BA8A85FB00
• Base-36: M9HU50RV5Z4

Squares and roots of 81399846015466240

• 81399846015466240 squared (81399846015466240²) is 6625934931341615108637284579737600
• 81399846015466240 cubed (81399846015466240³) is 539350083119706343106861175906625676668120858624000
• The square root of 81399846015466240 is 285306582.4958587247
• The cube root of 81399846015466240 is 433385.6506470391

Scales and comparisons

• 81,399,846,015,466,240 seconds is equal to 2,588,263,317 years, 1 week, 6 days, 5 hours, 30 minutes, 40 seconds.
• To count from 1 to 81,399,846,015,466,240 would take you about seven billion, seven hundred sixty-four million, seven hundred eighty-nine thousand, nine hundred fifty-one 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 81399846015466240 cubic inches would be around 36115.5 feet tall.

Recreational maths with 81399846015466240

• 81399846015466240 backwards is 04266451064899318
• The number of decimal digits it has is: 17
• The sum of 81399846015466240's digits is 76
• More coming soon!