81980479042

Names of 81980479042

• Cardinal: 81980479042 can be written as Eighty-one billion, nine hundred eighty million, four hundred seventy-nine thousand and forty-two.

Scientific notation

• Scientific notation: 8.1980479042 × 10¹⁰

Factors of 81980479042

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8552

Divisors of 81980479042

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 7 11 14 22 23 31 46 62 77 89 154 161 178 217 253 322 341 434 506 623 682 713 979 1246 1426 1771 1958 2047 2387 2759 3542 4094 4774 4991 5518 6853 7843 8389 9982 13706 14329 15686 16778 19313 22517 28658 30349 38626 45034 54901 58723 60698 63457 92279 109802 117446 126914 157619 184558 192947 212443 260059 315238 385894 424886 444199 520118 645953 698027 746621 888398 1291906 1350629 1396054 1493242 1820413 2122417 2701258 2860649 3640826 4244834 4886189 5226347 5721298 5981357 8212831 9772378 10452694 11962714 14856919 16425662 17172283 20024543 23145251 29713838 34344566 40049086 41869499 46290502 57489817 65794927 83738998 114979634 120205981 131589854 162016757 188895113 240411962 254597761 324033514 377790226 460564489 509195522 532340773 921128978 1064681546 1322265791 1782184327 2644531582 3564368654 3726385411 5855748503 7452770822 11711497006 40990239521 81980479042
• Sum of all divisors σ(n): 167016038400
• Sum of proper divisors (its aliquot sum) s(n): 85035559358
• 81980479042 is an abundant number, because the sum of its proper divisors (85035559358) is greater than itself. Its abundance is 3055080316

Bases of 81980479042

• Binary: 1001100010110011010101101011001000010₂
• Hexadecimal: 0x13166AD642
• Base-36: 11NT26GY

Squares and roots of 81980479042

• 81980479042 squared (81980479042²) is 6720798943955801237764
• 81980479042 cubed (81980479042³) is 550974316970464295946829260942088
• The square root of 81980479042 is 286322.3341655345
• The cube root of 81980479042 is 4344.1367086493

Scales and comparisons

• 81,980,479,042 seconds is equal to 2,606 years, 37 weeks, 5 days, 3 hours, 17 minutes, 22 seconds.
• To count from 1 to 81,980,479,042 would take you about five thousand, two hundred thirteen 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 81980479042 cubic inches would be around 362 feet tall.

Recreational maths with 81980479042

• 81980479042 backwards is 24097408918
• The number of decimal digits it has is: 11
• The sum of 81980479042's digits is 52
• More coming soon!