81337966992

Names of 81337966992

• Cardinal: 81337966992 can be written as Eighty-one billion, three hundred thirty-seven million, nine hundred sixty-six thousand, nine hundred ninety-two.

Scientific notation

• Scientific notation: 8.1337966992 × 10¹⁰

Factors of 81337966992

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 20920264

Divisors of 81337966992

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 81 108 144 162 216 243 324 432 486 648 972 1296 1944 3888 20920259 41840518 62760777 83681036 125521554 167362072 188282331 251043108 334724144 376564662 502086216 564846993 753129324 1004172432 1129693986 1506258648 1694540979 2259387972 3012517296 3389081958 4518775944 5083622937 6778163916 9037551888 10167245874 13556327832 20334491748 27112655664 40668983496 81337966992
• Sum of all divisors σ(n): 236064213840
• Sum of proper divisors (its aliquot sum) s(n): 154726246848
• 81337966992 is an abundant number, because the sum of its proper divisors (154726246848) is greater than itself. Its abundance is 73388279856

Bases of 81337966992

• Binary: 1001011110000000111101110000110010000₂
• Hexadecimal: 0x12F01EE190
• Base-36: 11D6IX00

Squares and roots of 81337966992

• 81337966992 squared (81337966992²) is 6615864874391681528064
• 81337966992 cubed (81337966992³) is 538120998776802818209045753663488
• The square root of 81337966992 is 285198.1188437259
• The cube root of 81337966992 is 4332.7580490629

Scales and comparisons

• 81,337,966,992 seconds is equal to 2,586 years, 15 weeks, 2 days, 15 hours, 43 minutes, 12 seconds.
• To count from 1 to 81,337,966,992 would take you about five thousand, one hundred seventy-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 81337966992 cubic inches would be around 361.1 feet tall.

Recreational maths with 81337966992

• 81337966992 backwards is 29966973318
• The number of decimal digits it has is: 11
• The sum of 81337966992's digits is 63
• More coming soon!