81243856330377888

Names of 81243856330377888

• Cardinal: 81243856330377888 can be written as Eighty-one quadrillion, two hundred forty-three trillion, eight hundred fifty-six billion, three hundred thirty million, three hundred seventy-seven thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 8.1243856330377888 × 10¹⁶

Factors of 81243856330377888

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 162912908

Divisors of 81243856330377888

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 31 32 37 42 48 56 62 74 84 93 96 111 112 124 148 168 186 217 222 224 248 259 296 336 372 434 444 496 518 592 647 651 672 744 777 868 888 992 1036 1147 1184 1294 1302 1488 1554 1736 1776 1941 2072 2294 2588 2604 2976 3108 3441 3472 3552 3882 4144 4529 4588 5176 5208 6216 6882 6944 7764 8029 8288 9058 9176 10352 10416 12432 13587 13764 15528 16058 18116 18352 20057 20704 20832 23939 24087 24864 27174 27528 31056 32116 36232 36704 40114 47878 48174 54348 55056 60171 62112 64232 71817 72464 80228 95756 96348 108696 110112 120342 128464 140399 143634 144928 160456 167573 191512 192696 217392 240684 256928 280798 287268 320912 335146 383024 385392 421197 434784 481368 502719 561596 574536 641824 670292 742109 766048 770784 842394 962736 1005438 1123192 1149072 1340584 1484218 1684788 1925472 2010876 2226327 2246384 2298144 2681168 2968436 3369576 4021752 4452654 4492768 5194763 5362336 5936872 6739152 8043504 8905308 10389526 11873744 13478304 15584289 16087008 17810616 20779052 23747488 31168578 35621232 41558104 62337156 71242464 83116208 124674312 162912181 166232416 249348624 325824362 488736543 498697248 651648724 977473086 1140385267 1303297448 1954946172 2280770534 2606594896 3421155801 3909892344 4561541068 5050277611 5213189792 6027750697 6842311602 7819784688 9123082136 10100555222 12055501394 13684623204 15150832833 15639569376 18083252091 18246164272 20201110444 24111002788 27369246408 30301665666 35351943277 36166504182 36492328544 40402220888 42194254879 48222005576 54738492816 60603331332 70703886554 72333008364 80804441776 84388509758 96444011152 105404181107 106055829831 109476985632 121206662664 126582764637 141407773108 144666016728 161608883552 168777019516 186860271607 192888022304 210808362214 212111659662 242413325328 253165529274 282815546216 289332033456 316212543321 337554039032 373720543214 421616724428 424223319324 484826650656 506331058548 560580814821 565631092432 578664066912 632425086642 675108078064 737829267749 747441086428 843233448856 848446638648 1012662117096 1121161629642 1131262184864 1264850173284 1308021901249 1350216156128 1475658535498 1494882172856 1686466897712 1696893277296 2025324234192 2213487803247 2242323259284 2529700346568 2616043802498 2951317070996 2989764345712 3267529614317 3372933795424 3393786554592 3899954700959 3924065703747 4050648468384 4426975606494 4484646518568 5059400693136 5232087604996 5902634141992 5979528691424 6535059228634 7799909401918 7848131407494 8853951212988 8969293037136 9802588842951 10118801386272 10464175209992 11699864102877 11805268283984 13070118457268 15599818803836 15696262814988 17707902425976 17938586074272 19605177685902 20928350419984 22872707300219 23399728205754 23610536567968 26140236914536 27299682906713 31199637607672 31392525629976 35415804851952 39210355371804 41856700839968 45745414600438 46799456411508 52280473829072 54599365813426 62399275215344 62785051259952 68618121900657 70831609703904 78420710743608 81899048720139 91490829200876 93598912823016 104560947658144 109198731626852 120898595729729 124798550430688 125570102519904 137236243801314 156841421487216 163798097440278 182981658401752 187197825646032 218397463253704 241797191459458 274472487602628 313682842974432 327596194880556 362695787189187 365963316803504 374395651292064 436794926507408 483594382918916 548944975205256 655192389761112 725391574378374 731926633607008 846290170108103 873589853014816 967188765837832 1097889950410512 1310384779522224 1450783148756748 1692580340216206 1934377531675664 2195779900821024 2538870510324309 2620769559044448 2901566297513496 3385160680432412 3868755063351328 5077741020648618 5803132595026992 6770321360864824 10155482041297236 11606265190053984 13540642721729648 20310964082594472 27081285443459296 40621928165188944 81243856330377888
• Sum of all divisors σ(n): 258793085831970816
• Sum of proper divisors (its aliquot sum) s(n): 177549229501592928
• 81243856330377888 is an abundant number, because the sum of its proper divisors (177549229501592928) is greater than itself. Its abundance is 96305373171215040

Bases of 81243856330377888

• Binary: 100100000101000101101101101011100110000010100101010100000₂
• Hexadecimal: 0x120A2DB5CC14AA0
• Base-36: M7YJKCKWCDC

Squares and roots of 81243856330377888

• 81243856330377888 squared (81243856330377888²) is 6600564191431083225661804879340544
• 81243856330377888 cubed (81243856330377888³) is 536255288868063816683112153963615030002287759491072
• The square root of 81243856330377888 is 285033079.3616381081
• The cube root of 81243856330377888 is 433108.6357042571

Scales and comparisons

• 81,243,856,330,377,888 seconds is equal to 2,583,303,327 years, 29 weeks, 5 hours, 24 minutes, 48 seconds.
• To count from 1 to 81,243,856,330,377,888 would take you about seven billion, seven hundred forty-nine million, nine hundred nine thousand, nine hundred eighty-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 81243856330377888 cubic inches would be around 36092.4 feet tall.

Recreational maths with 81243856330377888

• 81243856330377888 backwards is 88877303365834218
• 81243856330377888 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 81243856330377888's digits is 84
• More coming soon!