81730079109

Names of 81730079109

• Cardinal: 81730079109 can be written as Eighty-one billion, seven hundred thirty million, seventy-nine thousand, one hundred nine.

Scientific notation

• Scientific notation: 8.1730079109 × 10¹⁰

Factors of 81730079109

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 9314

Divisors of 81730079109

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 9 19 21 27 37 57 63 67 111 133 171 189 201 259 333 399 469 513 603 703 777 999 1197 1273 1407 1809 2109 2331 2479 3591 3819 4221 4921 6327 6993 7437 8911 9181 11457 12663 14763 17353 18981 22311 26733 27543 34371 44289 47101 52059 64267 66933 80199 82629 132867 141303 156177 174439 192801 240597 247887 329707 339697 423909 468531 523317 578403 615127 989121 1019091 1221073 1271727 1569951 1735209 1845381 2377879 2967363 3057273 3663219 4305889 4709853 5536143 6454243 7133637 8902089 9171819 10989657 11687413 12917667 16608429 19362729 21400911 22759699 32968971 35062239 38753001 45179701 58088187 64202733 68279097 81811891 105186717 116259003 135539103 159317893 174264561 204837291 245435673 315560151 406617309 432434281 477953679 614511873 736307019 1219851927 1297302843 1433861037 2208921057 3027039967 3891908529 4301583111 9081119901 11675725587 27243359703 81730079109
• Sum of all divisors σ(n): 151848243200
• Sum of proper divisors (its aliquot sum) s(n): 70118164091
• 81730079109 is a deficient number, because the sum of its proper divisors (70118164091) is less than itself. Its deficiency is 11611915018

Bases of 81730079109

• Binary: 1001100000111011111100000100110000101₂
• Hexadecimal: 0x13077E0985
• Base-36: 11JNZ8N9

Squares and roots of 81730079109

• 81730079109 squared (81730079109²) is 6679805831163398233881
• 81730079109 cubed (81730079109³) is 545941059013744035160365014092029
• The square root of 81730079109 is 285884.7304579243
• The cube root of 81730079109 is 4339.7093094781

Scales and comparisons

• 81,730,079,109 seconds is equal to 2,598 years, 39 weeks, 4 days, 23 hours, 45 minutes, 9 seconds.
• To count from 1 to 81,730,079,109 would take you about five thousand, one hundred ninety-seven 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 81730079109 cubic inches would be around 361.6 feet tall.

Recreational maths with 81730079109

• 81730079109 backwards is 90197003718
• The number of decimal digits it has is: 11
• The sum of 81730079109's digits is 45
• More coming soon!