81426617008

Names of 81426617008

• Cardinal: 81426617008 can be written as Eighty-one billion, four hundred twenty-six million, six hundred seventeen thousand and eight.

Scientific notation

• Scientific notation: 8.1426617008 × 10¹⁰

Factors of 81426617008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 79

Divisors of 81426617008

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 8 11 16 22 23 43 44 46 86 88 92 121 172 176 184 242 253 344 368 473 484 506 529 688 946 968 989 1012 1058 1849 1892 1936 1978 2024 2116 2783 3698 3784 3956 4048 4232 5203 5566 5819 7396 7568 7912 8464 10406 10879 11132 11638 14792 15824 20339 20812 21758 22264 22747 23276 29584 40678 41624 42527 43516 44528 45494 46552 64009 79507 81356 83248 85054 87032 90988 93104 119669 128018 159014 162712 170108 174064 181976 223729 239338 250217 256036 318028 325424 340216 363952 447458 467797 478676 500434 512072 636056 680432 874577 894916 935594 957352 978121 1000868 1024144 1272112 1749154 1789832 1828661 1871188 1914704 1956242 2001736 2752387 3498308 3579664 3657322 3742376 3912484 4003472 5145767 5504774 6996616 7314644 7484752 7824968 9620347 10291534 10759331 11009548 13993232 14629288 15649936 19240694 20115271 20583068 21518662 22019096 29258576 38481388 40230542 41166136 42059203 43037324 44038192 76962776 80461084 82332272 84118406 86074648 118352641 153925552 160922168 168236812 172149296 221267981 236705282 321844336 336473624 442535962 462651233 473410564 672947248 885071924 925302466 946821128 1770143848 1850604932 1893642256 3540287696 3701209864 5089163563 7402419728 10178327126 20356654252 40713308504 81426617008
• Sum of all divisors σ(n): 185593546600
• Sum of proper divisors (its aliquot sum) s(n): 104166929592
• 81426617008 is an abundant number, because the sum of its proper divisors (104166929592) is greater than itself. Its abundance is 22740312584

Bases of 81426617008

• Binary: 1001011110101011001111001001010110000₂
• Hexadecimal: 0x12F56792B0
• Base-36: 11ENAZSG

Squares and roots of 81426617008

• 81426617008 squared (81426617008²) is 6630293957367514872064
• 81426617008 cubed (81426617008³) is 539882406717021313388299446464512
• The square root of 81426617008 is 285353.4948235259
• The cube root of 81426617008 is 4334.3315643851

Scales and comparisons

• 81,426,617,008 seconds is equal to 2,589 years, 5 weeks, 6 days, 16 hours, 43 minutes, 28 seconds.
• To count from 1 to 81,426,617,008 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 81426617008 cubic inches would be around 361.2 feet tall.

Recreational maths with 81426617008

• 81426617008 backwards is 80071662418
• 81426617008 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81426617008's digits is 43
• More coming soon!