81235057429240

Names of 81235057429240

• Cardinal: 81235057429240 can be written as Eighty-one trillion, two hundred thirty-five billion, fifty-seven million, four hundred twenty-nine thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.123505742924 × 10¹³

Factors of 81235057429240

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 41139

Divisors of 81235057429240

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 4 5 8 10 11 13 20 22 26 40 44 52 55 65 67 71 73 88 104 110 130 134 142 143 146 220 260 268 284 286 292 335 355 365 440 520 536 568 572 584 670 710 715 730 737 781 803 871 923 949 1144 1340 1420 1430 1460 1474 1562 1606 1742 1846 1898 2680 2840 2860 2920 2948 3124 3212 3484 3685 3692 3796 3905 4015 4355 4615 4745 4757 4891 5183 5720 5896 6248 6424 6968 7370 7384 7592 7810 8030 8710 9230 9490 9514 9581 9782 10153 10366 10439 14740 15620 16060 17420 18460 18980 19028 19162 19564 20306 20732 20878 23785 24455 25915 29480 31240 32120 34840 36920 37960 38056 38324 39128 40612 40897 41464 41756 47570 47905 48910 50765 51830 52195 52327 53801 57013 61841 63583 67379 76648 81224 81794 83512 95140 95810 97820 101530 103660 104390 104654 107602 114026 123682 127166 134758 163588 190280 191620 195640 203060 204485 207320 208780 209308 215204 228052 247364 254332 261635 269005 269516 285065 309205 317915 327176 336895 347261 383240 406120 408970 417560 418616 430408 449867 456104 494728 508664 523270 531661 538010 539032 570130 618410 635830 673790 680251 694522 699413 741169 817940 899734 1046540 1063322 1076020 1140260 1236820 1271660 1347580 1360502 1389044 1398826 1482338 1635880 1736305 1799468 2093080 2126644 2152040 2249335 2280520 2473640 2543320 2658305 2695160 2721004 2740099 2778088 2797652 2903687 2964676 2985481 3401255 3472610 3497065 3598936 3705845 3819871 4253288 4498670 4514393 5316610 5442008 5480198 5595304 5807374 5848271 5929352 5970962 6802510 6945220 6994130 7411690 7639742 8997340 9028786 10633220 10960396 11614748 11696542 11941924 13605020 13700495 13890440 13988260 14518435 14823380 14927405 15279484 17994680 18057572 19099355 21266440 21920792 22571965 23229496 23393084 23883848 27210040 27400990 27976520 29036870 29241355 29646760 29854810 30141089 30558968 31940557 32840291 35621287 36115144 37747931 38198710 38811253 45143930 46786168 49658323 54801980 58073740 58482710 59709620 60282178 63881114 65680582 71242574 75495862 76397420 77622506 90287860 99316646 109603960 116147480 116965420 119419240 120564356 127762228 131361164 142485148 150705445 150991724 152794840 155245012 159702785 164201455 178106435 180575720 188739655 194056265 194547029 198633292 200027227 211969151 233930840 241128712 248291615 255524456 262722328 284970296 301410890 301983448 310490024 319405570 328402910 356212870 377479310 388112530 389094058 391834157 397266584 400054454 415227241 423938302 426923783 496583230 602821780 638811140 656805820 712425740 754958620 776225060 778188116 783668314 800108908 830454482 847876604 853847566 972735145 993166460 1000136135 1059845755 1205643560 1277622280 1313611640 1424851480 1509917240 1552450120 1556376232 1567336628 1600217816 1660908964 1695753208 1707695132 1945470290 1959170785 1986332920 2000272270 2076136205 2119691510 2134618915 2140017319 2200299497 2331660661 2529111377 2600353951 2755598963 3134673256 3321817928 3415390264 3890940580 3918341570 4000544540 4152272410 4239383020 4269237830 4280034638 4400598994 4663321322 5058222754 5200707902 5511197926 7781881160 7836683140 8001089080 8304544820 8478766040 8538475660 8560069276 8801197988 9326642644 10116445508 10401415804 10700086595 11001497485 11022395852 11658303305 12645556885 13001769755 13777994815 14201933117 15673366280 16609089640 17076951320 17120138552 17602395976 18653285288 20232891016 20802831608 21400173190 22002994970 22044791704 23316606610 25291113770 26003539510 27555989630 27820225147 28403866234 28603893461 30311588593 42800346380 44005989940 46633213220 50582227540 52007079020 55111979260 55640450294 56807732468 57207786922 60623177186 71009665585 85600692760 88011979880 93266426440 101164455080 104014158040 110223958520 111280900588 113615464936 114415573844 121246354372 139101125735 142019331170 143019467305 151557942965 156221264287 184625130521 222561801176 228831147688 242492708744 278202251470 284038662340 286038934610 303115885930 312442528574 369250261042 556404502940 568077324680 572077869220 606231771860 624885057148 738500522084 781106321435 923125652605 1112809005880 1144155738440 1212463543720 1249770114296 1477001044168 1562212642870 1846251305210 2030876435731 3124425285740 3692502610420 4061752871462 6248850571480 7385005220840 8123505742924 10154382178655 16247011485848 20308764357310 40617528714620 81235057429240
• Sum of all divisors σ(n): 224040735959040
• Sum of proper divisors (its aliquot sum) s(n): 142805678529800
• 81235057429240 is an abundant number, because the sum of its proper divisors (142805678529800) is greater than itself. Its abundance is 61570621100560

Bases of 81235057429240

• Binary: 10010011110001000000010101111011100101011111000₂
• Hexadecimal: 0x49E202BDCAF8
• Base-36: SSMVBRL6G

Squares and roots of 81235057429240

• 81235057429240 squared (81235057429240²) is 6599134555531920917606977600
• 81235057429240 cubed (81235057429240³) is 536081074601917777677816863607342265024000
• The square root of 81235057429240 is 9013049.2858543717
• The cube root of 81235057429240 is 43309.2999577731

Scales and comparisons

• 81,235,057,429,240 seconds is equal to 2,583,023 years, 28 weeks, 4 days, 2 hours, 20 minutes, 40 seconds.
• To count from 1 to 81,235,057,429,240 would take you about six million, four hundred fifty-seven thousand, five hundred fifty-eight 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 81235057429240 cubic inches would be around 3609.1 feet tall.

Recreational maths with 81235057429240

• 81235057429240 backwards is 04292475053218
• 81235057429240 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81235057429240's digits is 52
• More coming soon!