81521922902016

Names of 81521922902016

• Cardinal: 81521922902016 can be written as Eighty-one trillion, five hundred twenty-one billion, nine hundred twenty-two million, nine hundred two thousand and sixteen.

Scientific notation

• Scientific notation: 8.1521922902016 × 10¹³

Factors of 81521922902016

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 45595

Divisors of 81521922902016

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 37 41 48 64 74 82 96 111 123 128 148 164 192 193 222 246 256 296 328 384 386 444 492 512 579 592 656 768 772 888 984 1024 1158 1184 1312 1517 1536 1544 1776 1968 2048 2316 2368 2624 3034 3072 3088 3552 3936 4551 4632 4736 5248 6068 6144 6176 7104 7141 7872 7913 9102 9264 9472 10496 12136 12352 14208 14282 15744 15826 18204 18528 18944 20992 21423 23739 24272 24704 28416 28564 31488 31652 36408 37056 37888 41984 42846 45319 47478 48544 49408 56832 57128 62976 63304 72816 74112 75776 83968 85692 90638 94956 97088 98816 113664 114256 125952 126608 135957 145632 148224 171384 181276 189912 194176 197632 227328 228512 251904 253216 271914 291264 292781 296448 342768 362552 379824 388352 395264 457024 506432 543828 582528 585562 592896 685536 725104 759648 776704 878343 914048 1012864 1087656 1165056 1171124 1185792 1371072 1450208 1519296 1553408 1676803 1756686 1828096 1858079 2025728 2175312 2330112 2342248 2742144 2900416 3038592 3106816 3353606 3513372 3656192 3716158 4051456 4350624 4660224 4684496 5030409 5484288 5574237 5800832 6077184 6707212 7026744 7312384 7432316 8102912 8701248 8746567 9320448 9368992 10060818 10968576 11148474 11601664 12154368 13414424 14053488 14624768 14864632 16205824 17402496 17493134 18737984 20121636 21937152 22296948 23203328 24308736 26239701 26828848 28106976 29729264 34804992 34986268 37475968 40243272 43874304 44593896 46406656 48617472 52479402 53657696 56213952 59458528 68748923 69609984 69972536 74951936 80486544 89187792 92813312 104958804 107315392 112427904 118917056 137497846 139219968 139945072 149903872 160973088 178375584 206246769 209917608 214630784 224855808 237834112 274995692 278439936 279890144 299807744 321946176 323622979 356751168 358609247 412493538 419835216 429261568 449711616 475668224 549991384 559780288 599615488 643892352 647245958 713502336 717218494 824987076 839670432 858523136 899423232 951336448 970868937 1075827741 1099982768 1119560576 1287784704 1294491916 1427004672 1434436988 1649974152 1679340864 1717046272 1798846464 1902672896 1941737874 2151655482 2199965536 2239121152 2575569408 2588983832 2854009344 2868873976 3299948304 3358681728 3434092544 3805345792 3883475748 4303310964 4399931072 4478242304 5151138816 5177967664 5708018688 5737747952 6599896608 6717363456 7766951496 8606621928 8799862144 8956484608 10302277632 10355935328 11416037376 11475495904 13199793216 13268542139 13434726912 15533902992 17213243856 17599724288 17912969216 20711870656 22950991808 26399586432 26537084278 26869453824 31067805984 34426487712 35199448576 39805626417 41423741312 45901983616 52799172864 53074168556 53738907648 62135611968 68852975424 70398897152 79611252834 82847482624 91803967232 105598345728 106148337112 124271223936 137705950848 140797794304 159222505668 165694965248 183607934464 211196691456 212296674224 248542447872 275411901696 318445011336 331389930496 367215868928 422393382912 424593348448 497084895744 550823803392 636890022672 662779860992 734431737856 849186696896 994169791488 1101647606784 1273780045344 1698373393792 1988339582976 2203295213568 2547560090688 3396746787584 5095120181376 6793493575168 10190240362752 13586987150336 20380480725504 27173974300672 40760961451008 81521922902016
• Sum of all divisors σ(n): 229846775558400
• Sum of proper divisors (its aliquot sum) s(n): 148324852656384
• 81521922902016 is an abundant number, because the sum of its proper divisors (148324852656384) is greater than itself. Its abundance is 66802929754368

Bases of 81521922902016

• Binary: 10010100010010011001101010000011000100000000000₂
• Hexadecimal: 0x4A24CD418800
• Base-36: SWANK28LC

Squares and roots of 81521922902016

• 81521922902016 squared (81521922902016²) is 6645823913642240803136864256
• 81521922902016 cubed (81521922902016³) is 541780344708316993946460283484521780740096
• The square root of 81521922902016 is 9028949.1582363005
• The cube root of 81521922902016 is 43360.2194646735

Scales and comparisons

• 81,521,922,902,016 seconds is equal to 2,592,144 years, 51 weeks, 1 day, 7 hours, 53 minutes, 36 seconds.
• To count from 1 to 81,521,922,902,016 would take you about six million, four hundred eighty thousand, three hundred 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 81521922902016 cubic inches would be around 3613.4 feet tall.

Recreational maths with 81521922902016

• 81521922902016 backwards is 61020922912518
• 81521922902016 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81521922902016's digits is 48
• More coming soon!