81302908040520

Names of 81302908040520

• Cardinal: 81302908040520 can be written as Eighty-one trillion, three hundred two billion, nine hundred eight million, forty thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.130290804052 × 10¹³

Factors of 81302908040520

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 201657

Divisors of 81302908040520

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 23 24 30 31 40 46 53 60 62 69 89 92 93 106 115 120 124 138 155 159 178 184 186 212 230 248 265 267 276 310 318 345 356 372 424 445 460 465 530 534 552 620 636 690 712 713 744 795 890 920 930 1060 1068 1219 1240 1272 1335 1380 1426 1590 1643 1780 1860 2047 2120 2136 2139 2438 2670 2759 2760 2852 3180 3286 3560 3565 3657 3720 4094 4278 4717 4876 4929 5340 5518 5704 6095 6141 6360 6572 7130 7314 8188 8215 8277 8556 9434 9752 9858 10235 10680 10695 11036 12190 12282 13144 13795 14151 14260 14628 16376 16430 16554 17112 18285 18868 19716 20470 21390 22072 23585 24380 24564 24645 27590 28302 28520 29256 30705 32860 33108 36570 37736 37789 39432 40940 41385 42780 47170 48760 49128 49290 55180 56604 61410 63457 65720 66216 70755 73140 75578 81880 82770 85560 94340 98580 108491 110360 113208 113367 122820 126914 141510 146227 146280 151156 165540 188680 188945 190371 197160 201451 216982 226734 245640 253828 283020 292454 302312 317285 325473 331080 377890 380742 402902 433964 438681 453468 507656 542455 566040 566835 584908 604353 634570 650946 731135 755780 761484 805804 867928 877362 906936 951855 1007255 1084910 1133670 1169816 1208706 1269140 1301892 1462270 1511560 1522968 1611608 1627365 1754724 1903710 2014510 2169820 2193405 2267340 2417412 2538280 2603784 2924540 3021765 3254730 3363221 3509448 3807420 4029020 4339640 4386810 4534680 4633373 4834824 5849080 6043530 6244981 6509460 6726442 7614840 8058040 8773620 9266746 10089663 10676903 12087060 12489962 13018920 13452884 13900119 16816105 17547240 17929139 18533492 18734943 20179326 21353806 23166865 24174120 24979924 26905768 27800238 31224905 32030709 33632210 35858278 37066984 37469886 40358652 42707612 46333730 49959848 50448315 53384515 53787417 55600476 62449810 64061418 67264420 69500595 71716556 74939772 80717304 85415224 89645695 92667460 93674715 100896630 106769030 107574834 111200952 124899620 128122836 134528840 139001190 143433112 143634563 149879544 160153545 179291390 185334920 187349430 201793260 213538060 215149668 245568769 249799240 256245672 268937085 278002380 287269126 320307090 330983993 358582780 374698860 403586520 412370197 427076120 430299336 430903689 491137538 537874170 555803309 556004760 574538252 640614180 661967986 717165560 718172815 736706307 749397720 824740394 861807378 950244367 982275076 992951979 1075748340 1111606618 1149076504 1227843845 1237110591 1281228360 1323935972 1436345630 1473412614 1649480788 1654919965 1667409927 1723614756 1900488734 1964550152 1985903958 2061850985 2151496680 2154518445 2223213236 2455687690 2474221182 2647871944 2779016545 2850733101 2872691260 2946825228 3298961576 3309839930 3334819854 3447229512 3683531535 3800977468 3971807916 4123701970 4309036890 4446426472 4751221835 4911375380 4948442364 4964759895 5558033090 5701466202 5745382520 5893650456 6185552955 6619679860 6669639708 7367063070 7601954936 7612631839 7943615832 8247403940 8337049635 8618073780 9502443670 9822750760 9896884728 9929519790 11116066180 11402932404 12371105910 12783476107 13239359720 13339279416 14253665505 14734126140 15225263678 16494807880 16674099270 17236147560 19004887340 19859039580 21855620441 22232132360 22805864808 22837895517 24742211820 25566952214 28507331010 29457575377 29468252280 30450527356 33348198540 38009774680 38063159195 38350428321 39718079160 43711240882 45675791034 49484423640 51133904428 57014662020 58915150754 60901054712 63917380535 65566861323 66696397080 76126318390 76700856642 87422481764 88372726131 91351582068 102267808856 109278102205 114029324040 114189477585 117830301508 127834761070 131133722646 147287876885 152252636780 153401713284 174844963528 176745452262 182703164136 191752141605 218556204410 228378955170 235660603016 255669522140 262267445292 294575753770 304505273560 306803426568 327834306615 353490904524 383504283210 437112408820 441863630655 456757910340 511339044280 524534890584 589151507540 655668613230 677524233671 706981809048 767008566420 874224817640 883727261310 913515820680 1178303015080 1311337226460 1355048467342 1534017132840 1767454522620 2032572701013 2622674452920 2710096934684 3387621168355 3534909045240 4065145402026 5420193869368 6775242336710 8130290804052 10162863505065 13550484673420 16260581608104 20325727010130 27100969346840 40651454020260 81302908040520
• Sum of all divisors σ(n): 270689601945600
• Sum of proper divisors (its aliquot sum) s(n): 189386693905080
• 81302908040520 is an abundant number, because the sum of its proper divisors (189386693905080) is greater than itself. Its abundance is 108083785864560

Bases of 81302908040520

• Binary: 10010011111000111001110111100111111010101001000₂
• Hexadecimal: 0x49F1CEF3F548
• Base-36: STI1G9NWO

Squares and roots of 81302908040520

• 81302908040520 squared (81302908040520²) is 6610162855845251665961870400
• 81302908040520 cubed (81302908040520³) is 537425462801647557353394278143898188608000
• The square root of 81302908040520 is 9016812.5210919185
• The cube root of 81302908040520 is 43321.3544607407

Scales and comparisons

• 81,302,908,040,520 seconds is equal to 2,585,180 years, 51 weeks, 3 days, 2 hours, 22 minutes.
• To count from 1 to 81,302,908,040,520 would take you about six million, four hundred sixty-two thousand, nine hundred fifty-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 81302908040520 cubic inches would be around 3610.1 feet tall.

Recreational maths with 81302908040520

• 81302908040520 backwards is 02504080920318
• The number of decimal digits it has is: 14
• The sum of 81302908040520's digits is 42
• More coming soon!