81423632160

Names of 81423632160

• Cardinal: 81423632160 can be written as Eighty-one billion, four hundred twenty-three million, six hundred thirty-two thousand, one hundred sixty.

Scientific notation

• Scientific notation: 8.142363216 × 10¹⁰

Factors of 81423632160

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 419

Divisors of 81423632160

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 23 24 26 27 30 32 36 39 40 45 46 48 52 54 60 65 69 72 78 80 90 92 96 104 108 115 117 120 130 135 138 144 156 160 169 180 184 195 207 208 216 230 234 240 260 270 276 288 299 312 338 345 351 360 368 373 390 414 416 432 460 468 480 507 520 540 552 585 598 621 624 676 690 702 720 736 746 780 828 845 864 897 920 936 1014 1035 1040 1080 1104 1119 1170 1196 1242 1248 1352 1380 1404 1440 1492 1495 1521 1560 1656 1690 1755 1794 1840 1865 1872 2028 2070 2080 2160 2197 2208 2238 2340 2392 2484 2535 2691 2704 2760 2808 2984 2990 3042 3105 3120 3312 3357 3380 3510 3588 3680 3730 3744 3887 4056 4140 4320 4394 4476 4485 4563 4680 4784 4849 4968 5070 5382 5408 5520 5595 5616 5968 5980 6084 6210 6240 6591 6624 6714 6760 7020 7176 7460 7605 7774 8073 8112 8280 8579 8788 8952 8970 9126 9360 9568 9698 9936 10071 10140 10764 10985 11040 11190 11232 11661 11936 11960 12168 12420 13182 13428 13455 13520 14040 14352 14547 14920 15210 15548 16146 16224 16560 16785 17158 17576 17904 17940 18252 18720 19396 19435 19773 19872 20142 20280 21528 21970 22380 22815 23322 23920 24245 24336 24840 25737 26364 26856 26910 27040 28080 28704 29094 29840 30420 31096 32292 32955 33120 33570 34316 34983 35152 35808 35880 36504 38792 38870 39546 40284 40365 40560 42895 43056 43641 43940 44760 45630 46644 47840 48490 48672 49680 50355 50531 51474 52728 53712 53820 56160 58188 58305 59319 59680 60840 62192 63037 64584 65910 67140 68632 69966 70304 71760 72735 73008 77211 77584 77740 79092 80568 80730 81120 85790 86112 87282 87880 89520 91260 93288 96980 98865 99360 100710 101062 102948 104949 105456 107424 107640 111527 116376 116610 118638 121680 124384 126074 128685 129168 130923 131820 134280 137264 139932 143520 145470 146016 151593 154422 155168 155480 158184 161136 161460 171580 174564 174915 175760 179040 182520 186576 189111 193960 197730 201420 202124 205896 209898 210912 215280 218205 223054 231633 232752 233220 237276 243360 252148 252655 257370 258336 261846 263640 268560 274528 279864 290940 296595 303186 308844 310960 315185 316368 322272 322920 334581 343160 349128 349830 351520 365040 373152 378222 386055 387920 395460 402840 404248 411792 419796 430560 436410 446108 454779 463266 465504 466440 474552 504296 505310 514740 523692 524745 527280 537120 557635 559728 567333 581880 593190 606372 617688 621920 630370 632736 645840 654615 669162 686320 698256 699660 730080 756444 757965 772110 775840 790920 805680 808496 819481 823584 839592 872820 892216 909558 926532 932880 945555 949104 1003743 1008592 1010620 1029480 1047384 1049490 1054560 1115270 1119456 1134666 1158165 1163760 1186380 1212744 1235376 1260740 1291680 1309230 1338324 1364337 1372640 1396512 1399320 1449851 1512888 1515930 1544220 1581840 1611360 1616992 1638962 1672905 1679184 1701999 1745640 1784432 1819116 1853064 1865760 1891110 1898208 2007486 2017184 2021240 2058960 2094768 2098980 2230540 2269332 2273895 2316330 2327520 2372760 2425488 2458443 2470752 2521480 2618460 2676648 2728674 2798640 2836665 2899702 3011229 3025776 3031860 3088440 3163680 3277924 3345810 3358368 3403998 3491280 3568864 3638232 3706128 3782220 4014972 4042480 4097405 4117920 4189536 4197960 4349553 4461080 4538664 4547790 4632660 4745520 4850976 4916886 5018715 5042960 5236920 5353296 5457348 5597280 5673330 5799404 6022458 6051552 6063720 6176880 6555848 6691620 6807996 6821685 6982560 7249255 7276464 7375329 7412256 7564440 8029944 8084960 8194810 8395920 8509995 8699106 8922160 9077328 9095580 9265320 9491040 9833772 10037430 10085920 10473840 10706592 10914696 11346660 11598808 12044916 12127440 12292215 12353760 13048659 13111696 13383240 13615992 13643370 14498510 14552928 14750658 15056145 15128880 16059888 16389620 16791840 17019990 17398212 17844320 18154656 18191160 18530640 18848063 19667544 20074860 20947680 21747765 21829392 22125987 22693320 23197616 24089832 24254880 24584430 26097318 26223392 26766480 27231984 27286740 28997020 29501316 30112290 30257760 32119776 32779240 34039980 34796424 36382320 36876645 37061280 37696126 39145977 39335088 40149720 43495530 43658784 44251974 45386640 46395232 48179664 49168860 52194636 53532960 54463968 54573480 56544189 57994040 59002632 60224580 65243295 65558480 68079960 69592848 72764640 73753290 75392252 78291954 78670176 80299440 86991060 88503948 90773280 94240315 96359328 98337720 104389272 109146960 110629935 113088378 115988080 118005264 120449160 130486590 131116960 136159920 139185696 147506580 150784504 156583908 160598880 169632567 173982120 177007896 188480630 195729885 196675440 208778544 218293920 221259870 226176756 231976160 236010528 240898320 260973180 272319840 282720945 295013160 301569008 313167816 339265134 347964240 354015792 376961260 391459770 393350880 417557088 442519740 452353512 481796640 508897701 521946360 565441890 590026320 603138016 626335632 678530268 695928480 708031584 753922520 782919540 848162835 885039480 904707024 1017795402 1043892720 1130883780 1180052640 1252671264 1357060536 1507845040 1565839080 1696325670 1770078960 1809414048 2035590804 2087785440 2261767560 2544488505 2714121072 3015690080 3131678160 3392651340 3540157920 4071181608 4523535120 5088977010 5428242144 6263356320 6785302680 8142363216 9047070240 10177954020 13570605360 16284726432 20355908040 27141210720 40711816080 81423632160
• Sum of all divisors σ(n): 323006745600
• Sum of proper divisors (its aliquot sum) s(n): 241583113440
• 81423632160 is an abundant number, because the sum of its proper divisors (241583113440) is greater than itself. Its abundance is 160159481280

Bases of 81423632160

• Binary: 1001011110101001110100000011100100000₂
• Hexadecimal: 0x12F53A0720
• Base-36: 11ELJ0O0

Squares and roots of 81423632160

• 81423632160 squared (81423632160²) is 6629807874126986265600
• 81423632160 cubed (81423632160³) is 539823037634387310819586461696000
• The square root of 81423632160 is 285348.2646872063
• The cube root of 81423632160 is 4334.2786026737

Scales and comparisons

• 81,423,632,160 seconds is equal to 2,589 years, 1 week, 3 hours, 36 minutes.
• To count from 1 to 81,423,632,160 would take you about five thousand, one hundred seventy-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 81423632160 cubic inches would be around 361.2 feet tall.

Recreational maths with 81423632160

• 81423632160 backwards is 06123632418
• 81423632160 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81423632160's digits is 36
• More coming soon!