81622313318

Names of 81622313318

• Cardinal: 81622313318 can be written as Eighty-one billion, six hundred twenty-two million, three hundred thirteen thousand, three hundred eighteen.

Scientific notation

• Scientific notation: 8.1622313318 × 10¹⁰

Factors of 81622313318

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4093

Divisors of 81622313318

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 7 13 14 26 91 182 241 482 571 1142 1687 3133 3259 3374 3997 6266 6518 7423 7994 14846 21931 22813 42367 43862 45626 51961 84734 103922 137611 275222 296569 593138 785419 963277 1570838 1788943 1860889 1926554 3577886 3721778 5497933 10210447 10995866 12522601 13026223 20420894 24191557 25045202 26052446 48383114 71473129 142946258 169340899 338681798 448474249 896948498 3139319743 5830165237 6278639486 11660330474 40811156659 81622313318
• Sum of all divisors σ(n): 151624112640
• Sum of proper divisors (its aliquot sum) s(n): 70001799322
• 81622313318 is a deficient number, because the sum of its proper divisors (70001799322) is less than itself. Its deficiency is 11620513996

Bases of 81622313318

• Binary: 1001100000001000100011010100101100110₂
• Hexadecimal: 0x130111A966
• Base-36: 11HVTG12

Squares and roots of 81622313318

• 81622313318 squared (81622313318²) is 6662202031381760169124
• 81622313318 cubed (81622313318³) is 543784341593258096994571797593432
• The square root of 81622313318 is 285696.1905906343
• The cube root of 81622313318 is 4337.8010854269

Scales and comparisons

• 81,622,313,318 seconds is equal to 2,595 years, 17 weeks, 3 days, 16 hours, 48 minutes, 38 seconds.
• To count from 1 to 81,622,313,318 would take you about five thousand, one hundred ninety 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 81622313318 cubic inches would be around 361.5 feet tall.

Recreational maths with 81622313318

• 81622313318 backwards is 81331322618
• The number of decimal digits it has is: 11
• The sum of 81622313318's digits is 38
• More coming soon!