81536303422172800

Names of 81536303422172800

• Cardinal: 81536303422172800 can be written as Eighty-one quadrillion, five hundred thirty-six trillion, three hundred three billion, four hundred twenty-two million, one hundred seventy-two thousand, eight hundred.

Scientific notation

• Scientific notation: 8.15363034221728 × 10¹⁶

Factors of 81536303422172800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 5081

Divisors of 81536303422172800

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 101 128 160 200 202 320 400 404 505 640 800 808 1010 1600 1616 2020 2525 3200 3232 4040 4973 5050 6464 8080 9946 10100 10201 12928 16160 19892 20200 20402 24865 32320 39784 40400 40804 49730 51005 64640 79568 80800 81608 99460 102010 124325 159136 161600 163216 198920 204020 248650 255025 318272 323200 326432 397840 408040 497300 502273 510050 636544 652864 795680 816080 994600 1004546 1020100 1030301 1305728 1591360 1632160 1989200 2009092 2040200 2060602 2511365 3182720 3264320 3978400 4018184 4080400 4121204 5022730 5151505 6528640 7956800 8036368 8160800 8242408 10045460 10303010 12556825 15913600 16072736 16321600 16484816 20090920 20606020 24730729 25113650 25757525 32145472 32643200 32969632 40181840 41212040 49461458 50227300 50729573 51515050 64290944 65939264 80363680 82424080 98922916 100454600 101459146 103030100 123653645 131878528 160727360 164848160 197845832 200909200 202918292 206060200 247307290 253647865 321454720 329696320 395691664 401818400 405836584 412120400 494614580 507295730 618268225 659392640 791383328 803636800 811673168 824240800 989229160 1014591460 1236536450 1268239325 1582766656 1607273600 1623346336 1648481600 1978458320 2029182920 2473072900 2497803629 2536478650 3165533312 3246692672 3296963200 3956916640 4058365840 4946145800 4995607258 5072957300 5123686873 6493385344 7913833280 8116731680 9892291600 9991214516 10145914600 10247373746 12489018145 15827666560 16233463360 19784583200 19982429032 20291829200 20494747492 24978036290 25618434365 32466926720 39569166400 39964858064 40583658400 40989494984 49956072580 51236868730 62445090725 79138332800 79929716128 81167316800 81978989968 99912145160 102473737460 124890181450 128092171825 159859432256 162334633600 163957979936 199824290320 204947474920 249780362900 252278166529 256184343650 319718864512 327915959872 399648580640 409894949840 499560725800 504556333058 512368687300 655831919744 799297161280 819789899680 999121451600 1009112666116 1024737374600 1261390832645 1598594322560 1639579799360 1998242903200 2018225332232 2049474749200 2522781665290 3279159598720 3996485806400 4036450664464 4098949498400 5045563330580 6306954163225 7992971612800 8072901328928 8197898996800 10091126661160 12613908326450 16145802657856 16395797993600 20182253322320 25227816652900 25480094819429 32291605315712 40364506644640 50455633305800 50960189638858 80729013289280 100911266611600 101920379277716 127400474097145 161458026578560 201822533223200 203840758555432 254800948194290 403645066446400 407681517110864 509601896388580 637002370485725 807290132892800 815363034221728 1019203792777160 1274004740971450 1630726068443456 2038407585554320 2548009481942900 3261452136886912 4076815171108640 5096018963885800 8153630342217280 10192037927771600 16307260684434560 20384075855543200 40768151711086400 81536303422172800
• Sum of all divisors σ(n): 203475265085857860
• Sum of proper divisors (its aliquot sum) s(n): 121938961663685060
• 81536303422172800 is an abundant number, because the sum of its proper divisors (121938961663685060) is greater than itself. Its abundance is 40402658241512260

Bases of 81536303422172800

• Binary: 100100001101011001101011000000001110001101110111010000000₂
• Hexadecimal: 0x121ACD601C6EE80
• Base-36: MAU7GOSLCHS

Squares and roots of 81536303422172800

• 81536303422172800 squared (81536303422172800²) is 6648168775752627856546673059840000
• 81536303422172800 cubed (81536303422172800³) is 542067106501581344889689077805358667877220352000000
• The square root of 81536303422172800 is 285545624.0641288483
• The cube root of 81536303422172800 is 433627.6890506525

Scales and comparisons

• 81,536,303,422,172,800 seconds is equal to 2,592,602,240 years, 24 weeks, 6 days, 9 hours, 46 minutes, 40 seconds.
• To count from 1 to 81,536,303,422,172,800 would take you about seven billion, seven hundred seventy-seven million, eight hundred six thousand, seven hundred twenty-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 81536303422172800 cubic inches would be around 36135.6 feet tall.

Recreational maths with 81536303422172800

• 81536303422172800 backwards is 00827122430363518
• The number of decimal digits it has is: 17
• The sum of 81536303422172800's digits is 55
• More coming soon!