81533872512

Names of 81533872512

• Cardinal: 81533872512 can be written as Eighty-one billion, five hundred thirty-three million, eight hundred seventy-two thousand, five hundred twelve.

Scientific notation

• Scientific notation: 8.1533872512 × 10¹⁰

Factors of 81533872512

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 968

Divisors of 81533872512

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 32 36 37 38 48 54 57 64 72 74 76 96 108 111 114 128 144 148 152 171 192 216 222 228 288 296 304 333 342 384 432 444 456 513 576 592 608 666 684 703 864 888 907 912 999 1026 1152 1184 1216 1332 1368 1369 1406 1728 1776 1814 1824 1998 2052 2109 2368 2432 2664 2721 2736 2738 2812 3456 3552 3628 3648 3996 4104 4107 4218 4736 5328 5442 5472 5476 5624 6327 7104 7256 7296 7992 8163 8208 8214 8436 10656 10884 10944 10952 11248 12321 12654 14208 14512 15984 16326 16416 16428 16872 17233 18981 21312 21768 21888 21904 22496 24489 24642 25308 26011 29024 31968 32652 32832 32856 33559 33744 34466 36963 37962 42624 43536 43808 44992 48978 49284 50616 51699 52022 58048 63936 65304 65664 65712 67118 67488 68932 73926 75924 78033 87072 87616 89984 97956 98568 100677 101232 103398 104044 116096 127872 130608 131424 134236 134976 137864 147852 151848 155097 156066 174144 175232 195912 197136 201354 202464 206796 208088 234099 261216 262848 268472 269952 275728 295704 302031 303696 310194 312132 348288 391824 394272 402708 404928 413592 416176 465291 468198 522432 525696 536944 551456 591408 604062 607392 620388 624264 637621 702297 783648 788544 805416 809856 827184 832352 906093 930582 936396 1044864 1073888 1102912 1182816 1208124 1214784 1240776 1241683 1248528 1275242 1404594 1567296 1577088 1610832 1654368 1664704 1812186 1861164 1872792 1912863 2147776 2205824 2365632 2416248 2429568 2481552 2483366 2497056 2550484 2809188 3134592 3221664 3308736 3329408 3624372 3722328 3725049 3745584 3825726 4295552 4731264 4832496 4963104 4966732 4994112 5100968 5618376 5738589 6443328 6617472 7248744 7444656 7450098 7491168 7651452 9664992 9926208 9933464 9988224 10201936 11175147 11236752 11477178 12886656 14497488 14889312 14900196 14982336 15302904 17215767 19329984 19852416 19866928 20403872 22350294 22473504 22954356 23591977 28994976 29778624 29800392 29964672 30605808 33525441 34431534 38659968 39733856 40807744 44700588 44947008 45908712 47183954 57989952 59557248 59600784 61211616 67050882 68863068 70775931 79467712 81615488 89401176 89894016 91817424 94367908 115979904 119201568 122423232 134101764 137726136 141551862 158935424 178802352 183634848 188735816 212327793 238403136 244846464 268203528 275452272 283103724 357604704 367269696 377471632 424655586 476806272 536407056 550904544 566207448 636983379 715209408 734539392 754943264 849311172 1072814112 1101809088 1132414896 1273966758 1430418816 1509886528 1698622344 2145628224 2203618176 2264829792 2547933516 3019773056 3397244688 4291256448 4529659584 5095867032 6794489376 9059319168 10191734064 13588978752 20383468128 27177957504 40766936256 81533872512
• Sum of all divisors σ(n): 260621424000
• Sum of proper divisors (its aliquot sum) s(n): 179087551488
• 81533872512 is an abundant number, because the sum of its proper divisors (179087551488) is greater than itself. Its abundance is 97553678976

Bases of 81533872512

• Binary: 1001011111011110011000010100110000000₂
• Hexadecimal: 0x12FBCC2980
• Base-36: 11GF5UO0

Squares and roots of 81533872512

• 81533872512 squared (81533872512²) is 6647772366803069190144
• 81533872512 cubed (81533872512³) is 542018624643717944359515982921728
• The square root of 81533872512 is 285541.3674268581
• The cube root of 81533872512 is 4336.2337963921

Scales and comparisons

• 81,533,872,512 seconds is equal to 2,592 years, 27 weeks, 2 days, 1 hour, 55 minutes, 12 seconds.
• To count from 1 to 81,533,872,512 would take you about five thousand, one hundred eighty-five 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 81533872512 cubic inches would be around 361.4 feet tall.

Recreational maths with 81533872512

• 81533872512 backwards is 21527833518
• The number of decimal digits it has is: 11
• The sum of 81533872512's digits is 45
• More coming soon!