81237805312664

Names of 81237805312664

• Cardinal: 81237805312664 can be written as Eighty-one trillion, two hundred thirty-seven billion, eight hundred five million, three hundred twelve thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 8.1237805312664 × 10¹³

Factors of 81237805312664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 140

Divisors of 81237805312664

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 4 7 8 11 13 14 22 26 28 44 49 52 56 77 88 91 98 104 107 143 154 169 182 196 214 286 308 338 343 364 392 428 539 572 616 637 676 686 728 749 856 1001 1078 1144 1177 1183 1274 1352 1372 1391 1498 1859 2002 2156 2197 2354 2366 2548 2744 2782 2996 3718 3773 4004 4312 4394 4459 4708 4732 5096 5243 5564 5992 7007 7436 7546 8008 8239 8281 8788 8918 9416 9464 9737 10486 11128 11449 13013 14014 14872 15092 15301 15379 16478 16562 17576 17836 18083 19474 20972 22898 24167 26026 28028 30184 30602 30758 32956 33124 35672 36166 36701 38948 41944 45796 48334 49049 52052 56056 57673 57967 61204 61516 65912 66248 68159 72332 73402 77896 80143 91091 91592 96668 98098 104104 107107 107653 115346 115934 122408 123032 125939 126581 136318 144664 146804 148837 160286 169169 182182 193336 196196 198913 214214 215306 230692 231868 235079 251878 253162 272636 293608 297674 320572 338338 364364 392392 397826 403711 428428 430612 461384 463736 470158 477113 503756 506324 545272 561001 595348 637637 641144 676676 728728 749749 753571 795652 807422 856856 861224 881573 886067 940316 954226 1007512 1012648 1041859 1122002 1184183 1190696 1225043 1275274 1353352 1392391 1499498 1507142 1591304 1614844 1637207 1645553 1763146 1772134 1880632 1908452 1934881 2083718 2244004 2368366 2450086 2550548 2585869 2784782 2998996 3014284 3229688 3274414 3291106 3526292 3544268 3816904 3869762 3927007 4167436 4488008 4736732 4900172 5101096 5171738 5248243 5569564 5997992 6028568 6171011 6202469 6548828 6582212 7052584 7088536 7293013 7739524 7854014 8289281 8334872 8575301 9473464 9746737 9800344 10343476 10496486 11139128 11460449 11518871 12342022 12404938 13097656 13164424 13475473 13544167 14586026 15479048 15708028 15925559 16578562 17150602 18101083 19493474 20686952 20992972 21283691 22920898 23037742 24684044 24809876 25153453 26950946 27088334 29172052 31416056 31851118 33157124 34301204 36202166 38986948 41985944 42567382 43197077 45841796 46075484 49368088 49619752 50306906 51051091 53901892 54176668 58344104 60027107 63702236 66314248 68227159 68602408 72404332 77973896 80223143 80632097 85134764 86394154 91683592 92150968 94328311 94809169 100613812 102102182 107803784 108353336 111478913 120054214 126707581 127404472 136454318 144808664 148985837 160446286 161264194 170269528 172788308 175181149 176074171 188656622 189618338 201227624 204204364 207032267 222957826 240108428 253415162 272908636 276687983 297971674 320892572 322528388 345576616 350362298 352148342 377313244 379236676 408408728 414064534 420189749 445915652 480216856 506830324 545817272 553375966 561562001 595943348 641785144 645056776 660298177 663664183 700724596 704296684 754626488 758473352 780352391 828129068 840379498 886953067 891831304 1013660648 1042900859 1106751932 1123124002 1191886696 1226268043 1232519197 1320596354 1327328366 1401449192 1408593368 1449225869 1560704782 1656258136 1680758996 1773906134 1936815881 2085801718 2213503864 2246248004 2277354937 2452536086 2465038394 2641192708 2654656732 2691419471 2898451738 3121409564 3361517992 3547812268 3873631762 4171603436 4492496008 4554709874 4622087239 4905072172 4930076788 5282385416 5309313464 5382838942 5462466737 5796903476 6242819128 7095624536 7300306013 7747263524 8343206872 8583876301 8627634379 9109419748 9244174478 9810144344 9860153576 10144581083 10765677884 10924933474 11593806952 13557711167 14600612026 15494527048 15941484559 17167752602 17255268758 18218839496 18488348956 18839936297 20289162166 21531355768 21849866948 27115422334 29201224052 29605614181 31882969118 34335505204 34510537516 36976697912 37679872594 40578324332 43699733896 54230844668 58402448104 59211228362 60087134107 63765938236 68671010408 69021075032 71012067581 75359745188 81156648664 94903978169 108461689336 111590391913 118422456724 120174268214 127531876472 131879554079 142024135162 150719490376 189807956338 207239299267 223180783826 236844913448 240348536428 263759108158 284048270324 379615912676 414478598534 446361567652 480697072856 527518216316 568096540648 759231825352 781132743391 828957197068 892723135304 923156878553 1055036432632 1450675094869 1562265486782 1657914394136 1846313757106 2901350189738 3124530973564 3692627514212 5802700379476 6249061947128 7385255028424 10154725664083 11605400758952 20309451328166 40618902656332 81237805312664
• Sum of all divisors σ(n): 211903776000000
• Sum of proper divisors (its aliquot sum) s(n): 130665970687336
• 81237805312664 is an abundant number, because the sum of its proper divisors (130665970687336) is greater than itself. Its abundance is 49428165374672

Bases of 81237805312664

• Binary: 10010011110001010100110100001110010101010011000₂
• Hexadecimal: 0x49E2A6872A98
• Base-36: SSO4RS9LK

Squares and roots of 81237805312664

• 81237805312664 squared (81237805312664²) is 6599581012018299222798776896
• 81237805312664 cubed (81237805312664³) is 536135477399496646235068099912910059410944
• The square root of 81237805312664 is 9013201.7237308075
• The cube root of 81237805312664 is 43309.7882837469

Scales and comparisons

• 81,237,805,312,664 seconds is equal to 2,583,110 years, 48 weeks, 7 hours, 17 minutes, 44 seconds.
• To count from 1 to 81,237,805,312,664 would take you about six million, four hundred fifty-seven thousand, seven hundred seventy-seven 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 81237805312664 cubic inches would be around 3609.1 feet tall.

Recreational maths with 81237805312664

• 81237805312664 backwards is 46621350873218
• 81237805312664 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81237805312664's digits is 56
• More coming soon!