81643946775616

Names of 81643946775616

• Cardinal: 81643946775616 can be written as Eighty-one trillion, six hundred forty-three billion, nine hundred forty-six million, seven hundred seventy-five thousand, six hundred sixteen.

Scientific notation

• Scientific notation: 8.1643946775616 × 10¹³

Factors of 81643946775616

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 127

Divisors of 81643946775616

• Number of divisors d(n): 315
• Complete list of divisors:
  1 2 4 8 16 17 29 32 34 58 64 68 79 116 136 158 232 272 289 316 464 493 544 578 632 841 928 986 1088 1156 1264 1343 1682 1856 1972 2291 2312 2528 2686 3364 3944 4582 4624 5056 5372 6241 6728 7888 8381 9164 9248 10744 12482 13456 14297 15776 16762 18328 18496 21488 22831 24389 24964 26912 28594 31552 33524 36656 38947 42976 45662 48778 49928 53824 57188 66439 67048 73312 77894 85952 91324 97556 99856 106097 114376 132878 134096 146624 155788 180989 182648 195112 199712 212194 228752 243049 265756 268192 311576 361978 365296 390224 399424 414613 424388 457504 486098 531512 536384 623152 662099 707281 723956 730592 780448 829226 848776 915008 972196 1063024 1129463 1246304 1324198 1414562 1447912 1461184 1560896 1658452 1697552 1803649 1926731 1944392 2126048 2258926 2492608 2648396 2829124 2895824 3076813 3316904 3395104 3607298 3853462 3888784 4252096 4517852 5248681 5296792 5658248 5791648 6153626 6633808 6790208 7048421 7214596 7706924 7777568 9035704 10497362 10593584 11316496 11583296 12023777 12307252 13267616 14096842 14429192 15413848 15555136 18071408 19200871 20994724 21187168 22632992 24047554 24614504 26535232 28193684 28858384 30827696 32754427 36142816 38401742 41989448 42374336 45265984 48095108 49229008 52305821 55875199 56387368 57716768 61655392 65508854 72285632 76803484 83978896 89227577 96190216 98458016 104611642 111750398 112774736 115433536 123310784 131017708 152211749 153606968 167957792 178455154 192380432 196916032 204404209 209223284 223500796 225549472 262035416 304423498 307213936 335915584 356910308 384760864 408808418 418446568 447001592 451098944 524070832 556825259 608846996 614427872 713820616 769521728 817616836 836893136 894003184 949878383 1048141664 1113650518 1217693992 1228855744 1427641232 1516868809 1635233672 1673786272 1788006368 1899756766 2096283328 2227301036 2435387984 2587599733 2855282464 3033737618 3270467344 3347572544 3576012736 3799513532 4414140721 4454602072 4870775968 5175199466 5710564928 6067475236 6540934688 7599027064 8828281442 8909204144 9741551936 10350398932 12134950472 13081869376 15198054128 16147932511 17656562884 17818408288 20700797864 24269900944 30396108256 32295865022 35313125768 35636816576 41401595728 43989195461 48539801888 60792216512 64591730044 70626251536 75040392257 82803191456 87978390922 97079603776 129183460088 141252503072 150080784514 165606382912 175956781844 258366920176 282505006144 300161569028 351913563688 516733840352 600323138056 703827127376 1033467680704 1200646276112 1275686668369 1407654254752 2401292552224 2551373336738 2815308509504 4802585104448 5102746673476 10205493346952 20410986693904 40821973387808 81643946775616
• Sum of all divisors σ(n): 180534340470729
• Sum of proper divisors (its aliquot sum) s(n): 98890393695113
• 81643946775616 is an abundant number, because the sum of its proper divisors (98890393695113) is greater than itself. Its abundance is 17246446919497

Bases of 81643946775616

• Binary: 10010100100000100110110011100100001010001000000₂
• Hexadecimal: 0x4A4136721440
• Base-36: SXUPLXC1S

Squares and roots of 81643946775616

• 81643946775616 squared (81643946775616²) is 6665734045099618243052179456
• 81643946775616 cubed (81643946775616³) is 544216835598524773580352517891132596944896
• 81643946775616 is a perfect square number. Its square root is 9035704
• The cube root of 81643946775616 is 43381.8428679517

Scales and comparisons

• 81,643,946,775,616 seconds is equal to 2,596,024 years, 50 weeks, 1 day, 16 hours, 20 minutes, 16 seconds.
• To count from 1 to 81,643,946,775,616 would take you about six million, four hundred ninety thousand and sixty-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 81643946775616 cubic inches would be around 3615.2 feet tall.

Recreational maths with 81643946775616

• 81643946775616 backwards is 61657764934618
• The number of decimal digits it has is: 14
• The sum of 81643946775616's digits is 73
• More coming soon!