81831335872

Names of 81831335872

• Cardinal: 81831335872 can be written as Eighty-one billion, eight hundred thirty-one million, three hundred thirty-five thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 8.1831335872 × 10¹⁰

Factors of 81831335872

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2074

Divisors of 81831335872

• Number of divisors d(n): 252
• Complete list of divisors:
  1 2 4 8 11 13 16 22 26 31 32 44 52 62 64 88 104 121 124 143 169 176 208 242 248 286 338 341 352 403 416 484 496 572 676 682 704 806 832 968 992 1144 1352 1364 1573 1612 1859 1936 1984 2017 2288 2704 2728 3146 3224 3718 3751 3872 4034 4433 4576 5239 5408 5456 6292 6448 7436 7502 7744 8068 8866 9152 10478 10816 10912 12584 12896 14872 15004 16136 17732 20449 20956 21824 22187 25168 25792 26221 29744 30008 32272 35464 40898 41912 44374 48763 50336 52442 57629 59488 60016 62527 64544 70928 81796 83824 88748 97526 100672 104884 115258 118976 120032 125054 129088 141856 163592 167648 177496 195052 209768 230516 240064 244057 250108 283712 288431 327184 335296 340873 354992 390104 419536 461032 488114 500216 576862 633919 654368 681746 687797 709984 780208 812851 839072 922064 976228 1000432 1153724 1267838 1308736 1363492 1375594 1419968 1560416 1625702 1678144 1844128 1952456 2000864 2307448 2535676 2726984 2751188 3120832 3172741 3251404 3688256 3749603 3904912 4001728 4614896 5071352 5453968 5502376 6345482 6502808 7499206 7565767 7809824 8941361 9229792 10142704 10567063 10907936 11004752 12690964 13005616 14998412 15131534 15619648 17882722 18459584 20285408 21134126 21815872 22009504 25381928 26011232 29996824 30263068 35765444 40570816 41245633 42268252 44019008 50763856 52022464 59993648 60526136 71530888 82491266 84536504 98354971 101527712 116237693 119987296 121052272 143061776 164982532 169073008 196709942 203055424 232475386 239974592 242104544 286123552 329965064 338146016 393419884 464950772 484209088 572247104 659930128 676292032 786839768 929901544 1278614623 1319860256 1573679536 1859803088 2557229246 2639720512 3147359072 3719606176 5114458492 6294718144 7439212352 10228916984 20457833968 40915667936 81831335872
• Sum of all divisors σ(n): 199607838528
• Sum of proper divisors (its aliquot sum) s(n): 117776502656
• 81831335872 is an abundant number, because the sum of its proper divisors (117776502656) is greater than itself. Its abundance is 35945166784

Bases of 81831335872

• Binary: 1001100001101100001110001011111000000₂
• Hexadecimal: 0x130D8717C0
• Base-36: 11LC9IV4

Squares and roots of 81831335872

• 81831335872 squared (81831335872²) is 6696367530596074000384
• 81831335872 cubed (81831335872³) is 547972700518562567889989760974848
• The square root of 81831335872 is 286061.7693296327
• The cube root of 81831335872 is 4341.5007493671

Scales and comparisons

• 81,831,335,872 seconds is equal to 2,601 years, 51 weeks, 22 hours, 37 minutes, 52 seconds.
• To count from 1 to 81,831,335,872 would take you about five thousand, two hundred 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 81831335872 cubic inches would be around 361.8 feet tall.

Recreational maths with 81831335872

• 81831335872 backwards is 27853313818
• The number of decimal digits it has is: 11
• The sum of 81831335872's digits is 49
• More coming soon!