81977345912415872

Names of 81977345912415872

• Cardinal: 81977345912415872 can be written as Eighty-one quadrillion, nine hundred seventy-seven trillion, three hundred forty-five billion, nine hundred twelve million, four hundred fifteen thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 8.1977345912415872 × 10¹⁶

Factors of 81977345912415872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 701

Divisors of 81977345912415872

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 4 8 16 32 43 64 86 128 172 277 344 379 554 688 758 1108 1376 1516 1849 2216 2752 3032 3698 4432 5504 6064 7396 8864 11911 12128 14792 16297 17728 23822 24256 29584 32594 35456 47644 48512 59168 65188 76729 79507 95288 104983 118336 130376 153458 159014 190576 209966 236672 260752 306916 318028 381152 419932 512173 521504 613832 636056 700771 762304 839864 1024346 1043008 1227664 1272112 1401542 1524608 1679728 2048692 2086016 2455328 2544224 2803084 3299347 3359456 4097384 4514269 4910656 5088448 5606168 6598694 6718912 8194768 9028538 9821312 10176896 11212336 13197388 13437824 16389536 18057076 21253933 22023439 22424672 26394776 29080291 30133153 32779072 36114152 42507866 44046878 44849344 52789552 58160582 60266306 65558144 72228304 85015732 88093756 89698688 105579104 116321164 120532612 141871921 144456608 170031464 176187512 194113567 211158208 232642328 241065224 283743842 288913216 340062928 352375024 388227134 422316416 465284656 482130448 567487684 577826432 680125856 704750048 776454268 913919119 930569312 964260896 1134975368 1250452513 1360251712 1409500096 1552908536 1827838238 1861138624 1928521792 2269950736 2500905026 2720503424 2819000192 3105817072 3655676476 3722277248 3857043584 4539901472 5001810052 6100492603 6211634144 7311352952 8055240607 8346883381 9079802944 10003620104 12200985206 12423268288 14622705904 16110481214 16693766762 18159605888 20007240208 24401970412 24846536576 29245411808 32220962428 33387533524 39298522117 40014480416 48803940824 53769458059 58490823616 64441924856 66775067048 78597044234 80028960832 97607881648 107538916118 116981647232 128883849712 133550134096 157194088468 160057921664 195215763296 215077832236 257767699424 267100268192 314388176936 346375346101 390431526592 430155664472 515535398848 534200536384 628776353872 692750692202 780863053184 860311328944 1031070797696 1068401072768 1257552707744 1385501384404 1689836451031 1720622657888 2312086696537 2515105415488 2771002768808 3379672902062 3441245315776 4624173393074 5030210830976 5542005537616 6759345804124 6882490631552 9248346786148 11084011075232 13518691608248 14894139882343 18496693572296 22168022150464 27037383216496 29788279764686 36993387144592 44336044300928 54074766432992 59576559529372 73986774289184 108149532865984 119153119058744 147973548578368 216299065731968 238306238117488 295947097156736 476612476234976 640448014940749 953224952469952 1280896029881498 1906449904939904 2561792059762996 5123584119525992 10247168239051984 20494336478103968 40988672956207936 81977345912415872
• Sum of all divisors σ(n): 168251202200400000
• Sum of proper divisors (its aliquot sum) s(n): 86273856287984128
• 81977345912415872 is an abundant number, because the sum of its proper divisors (86273856287984128) is greater than itself. Its abundance is 4296510375568256

Bases of 81977345912415872

• Binary: 100100011001111011111011000110110101111010010011010000000₂
• Hexadecimal: 0x1233DF636BD2680
• Base-36: MF6JKT7WJNK

Squares and roots of 81977345912415872

• 81977345912415872 squared (81977345912415872²) is 6720285242843887277342403477520384
• 81977345912415872 cubed (81977345912415872³) is 550911147982717048413946063031963175218073565134848
• The square root of 81977345912415872 is 286316862.7804095509
• The cube root of 81977345912415872 is 434408.1366545121

Scales and comparisons

• 81,977,345,912,415,872 seconds is equal to 2,606,626,027 years, 22 weeks, 4 days, 7 hours, 4 minutes, 32 seconds.
• To count from 1 to 81,977,345,912,415,872 would take you about seven billion, eight hundred nineteen million, eight hundred seventy-eight thousand and 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 81977345912415872 cubic inches would be around 36200.7 feet tall.

Recreational maths with 81977345912415872

• 81977345912415872 backwards is 27851421954377918
• The number of decimal digits it has is: 17
• The sum of 81977345912415872's digits is 83
• More coming soon!