81872658718240

Names of 81872658718240

• Cardinal: 81872658718240 can be written as Eighty-one trillion, eight hundred seventy-two billion, six hundred fifty-eight million, seven hundred eighteen thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.187265871824 × 10¹³

Factors of 81872658718240

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1549

Divisors of 81872658718240

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 4 5 8 10 13 16 19 20 26 31 32 38 40 52 62 65 76 80 95 104 124 130 152 155 160 181 190 208 247 248 260 304 310 362 380 403 416 421 494 496 520 589 608 620 724 760 806 842 877 905 988 992 1040 1178 1235 1240 1448 1520 1612 1684 1754 1810 1976 2015 2080 2105 2353 2356 2470 2480 2896 2945 3040 3224 3368 3439 3508 3620 3952 4030 4210 4385 4706 4712 4940 4960 5473 5611 5792 5890 6448 6736 6878 7016 7240 7657 7904 7999 8060 8420 8770 9412 9424 9880 10946 11222 11401 11765 11780 12896 13051 13472 13756 14032 14480 15314 15998 16120 16663 16840 17195 17540 18824 18848 19760 21892 22444 22802 23530 23560 26102 27187 27365 27512 28055 28064 28960 30628 31996 32240 33326 33680 34390 35080 37648 38285 39520 39995 43784 44707 44888 45604 47060 47120 52204 54374 54730 55024 56110 57005 61256 63992 64480 65255 66652 67360 68780 70160 72943 75296 76201 76570 79990 83315 87568 89414 89776 91208 94120 94240 103987 104408 106609 108748 109460 110048 112220 114010 122512 127984 130510 133304 135935 137560 140320 145886 152402 153140 158737 159980 166630 169663 175136 178828 179552 182416 188240 207974 208816 213218 216619 217496 218920 223535 224440 228020 245024 247969 255968 261020 266608 271870 275120 291772 304804 306280 317474 319960 333260 339326 353431 357656 364715 364832 369217 376480 381005 415948 417632 426436 433238 434992 437840 447070 448880 456040 495938 516553 519935 522040 533045 533216 543740 550240 583544 609608 612560 634948 639920 666520 678652 706862 715312 729430 738434 762010 793685 831896 848315 852872 866476 869984 875680 894140 897760 912080 990613 991876 1033106 1039870 1044080 1066090 1083095 1087480 1167088 1219216 1225120 1239845 1269896 1279840 1333040 1357304 1385917 1413724 1430624 1447819 1458860 1476868 1524020 1587370 1663792 1696630 1705744 1732952 1767155 1788280 1824160 1846085 1981226 1983752 2063581 2066212 2079740 2088160 2132180 2166190 2174960 2334176 2362231 2438432 2479690 2539792 2582765 2666080 2714608 2771834 2827448 2895638 2917720 2953736 3016003 3048040 3174740 3223597 3327584 3393260 3411488 3465904 3534310 3576560 3692170 3962452 3967504 4127162 4132424 4159480 4264360 4332380 4349920 4724462 4799821 4920847 4953065 4959380 5079584 5165530 5429216 5543668 5654896 5791276 5835440 5907472 6032006 6096080 6349480 6447194 6715189 6786520 6929585 6931808 7015123 7068620 7153120 7239095 7384340 7924904 7935008 8254324 8264848 8318960 8528720 8664760 9448924 9599642 9841694 9906130 9918760 10317905 10331060 11087336 11309792 11445727 11582552 11670880 11811155 11814944 12064012 12192160 12698960 12894388 13430378 13573040 13859170 14030246 14137240 14478190 14768680 15080015 15849808 16117985 16508648 16529696 16637920 17057440 17329520 18821647 18897848 19199284 19683388 19812260 19837520 20635810 20662120 22174672 22891454 23165104 23622310 23999105 24128024 24604235 25397920 25788776 26860756 27146080 27718340 28060492 28274480 28956380 29537360 30160030 30709003 31699616 32235970 33017296 33575945 34659040 35075615 37643294 37795696 38398568 39208039 39366776 39624520 39675040 41271620 41324240 44349344 44882389 45782908 46330208 47244620 47998210 48256048 49208470 51577552 53721512 55436680 56120984 56548960 57228635 57912760 59074720 60320060 61418006 63971011 64471940 66034592 66828277 67151890 70151230 75286588 75591392 76797136 78416078 78733552 79249040 82543240 82648480 89764778 91196599 91565816 93496093 94108235 94489240 95996420 96512096 98416940 103155104 107443024 110873360 112241968 114457270 115825520 120640120 122836012 127942022 128943880 133656554 134303780 140302460 148794451 150573176 153545015 153594272 156832156 157467104 158498080 165086480 179529556 182393198 183131632 186992186 188216470 188978480 191992840 196040195 196833880 214886048 217468813 221746720 224411945 224483936 228914540 231651040 241280240 245672024 255884044 257887760 267313108 268607560 280604920 297588902 301146352 307090030 313664312 319855055 330172960 334141385 359059112 364786396 366263264 373984372 376432940 377956960 383985680 392080390 393667760 434937626 448823890 455982995 457829080 467480465 482560480 491344048 511768088 515775520 534626216 537215120 561209840 583471057 595177804 602292704 614180060 627328624 639710110 668282770 718118224 729572792 743972255 747968744 752865880 767971360 784160780 787335520 868767601 869875252 897647780 911965990 915658160 934960930 982688096 1023536176 1069252432 1074430240 1087344065 1122419680 1166942114 1190355608 1215449209 1228360120 1254657248 1269737263 1279420220 1336565540 1436236448 1459145584 1487944510 1495937488 1505731760 1568321560 1737535202 1739750504 1795295560 1823931980 1831316320 1869921860 2047072352 2071676587 2138504864 2174688130 2333884228 2380711216 2430898418 2456720240 2539474526 2558840440 2673131080 2827094569 2917355285 2918291168 2975889020 2991874976 3011463520 3136643120 3475070404 3479501008 3590591120 3647863960 3739843720 4143353174 4343838005 4349376260 4667768456 4761422432 4861796836 4913440480 5078949052 5117680880 5346262160 5654189138 5834710570 5951778040 6077246045 6273286240 6348686315 6950140808 6959002016 7181182240 7295727920 7479687440 8286706348 8687676010 8698752520 9335536912 9723593672 10157898104 10235361760 10358382935 10692524320 11308378276 11669421140 11903556080 12154492090 12697372630 13900281616 14135472845 14591455840 14959374880 16506584419 16573412696 17375352020 17397505040 18671073824 19447187344 20315796208 20716765870 22616756552 23338842280 23807112160 24308984180 25394745260 26931795631 27800563232 28270945690 33013168838 33146825392 34750704040 34795010080 38894374688 39361855153 40631592416 41433531740 45233513104 46677684560 48617968360 50789490520 53863591262 56541891380 66026337676 66293650784 69501408080 78723710306 82532922095 82867063480 90467026208 93355369120 97235936720 101578981040 107727182524 113083782760 132052675352 134658978155 139002816160 157447420612 165065844190 165734126960 194471873440 196809275765 203157962080 215454365048 226167565520 264105350704 269317956310 314894841224 330131688380 331468253920 393618551530 430908730096 452335131040 511704116989 528210701408 538635912620 629789682448 660263376760 787237103060 861817460192 1023408233978 1077271825240 1259579364896 1320526753520 1574474206120 2046816467956 2154543650480 2558520584945 2641053507040 3148948412240 4093632935912 4309087300960 5117041169890 6297896824480 8187265871824 10234082339780 16374531743648 20468164679560 40936329359120 81872658718240
• Sum of all divisors σ(n): 228390567874560
• Sum of proper divisors (its aliquot sum) s(n): 146517909156320
• 81872658718240 is an abundant number, because the sum of its proper divisors (146517909156320) is greater than itself. Its abundance is 64645250438080

Bases of 81872658718240

• Binary: 10010100111011001110110101111010101111000100000₂
• Hexadecimal: 0x4A7676BD5E20
• Base-36: T0RS340F4

Squares and roots of 81872658718240

• 81872658718240 squared (81872658718240²) is 6703132245593400279708697600
• 81872658718240 cubed (81872658718240³) is 548803258686698172232698355128195764224000
• The square root of 81872658718240 is 9048351.1601970885
• The cube root of 81872658718240 is 43422.3141069795

Scales and comparisons

• 81,872,658,718,240 seconds is equal to 2,603,297 years, 15 weeks, 3 days, 15 hours, 30 minutes, 40 seconds.
• To count from 1 to 81,872,658,718,240 would take you about six million, five hundred eight thousand, two hundred forty-three 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 81872658718240 cubic inches would be around 3618.5 feet tall.

Recreational maths with 81872658718240

• 81872658718240 backwards is 04281785627818
• The number of decimal digits it has is: 14
• The sum of 81872658718240's digits is 67
• More coming soon!