81819835715144018

Names of 81819835715144018

• Cardinal: 81819835715144018 can be written as Eighty-one quadrillion, eight hundred nineteen trillion, eight hundred thirty-five billion, seven hundred fifteen million, one hundred forty-four thousand and eighteen.

Scientific notation

• Scientific notation: 8.1819835715144018 × 10¹⁶

Factors of 81819835715144018

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 589

Divisors of 81819835715144018

• Number of divisors d(n): 14
• Complete list of divisors:
  1 2 587 1174 344569 689138 202262003 404524006 118727795761 237455591522 69693216111707 139386432223414 40909917857572009 81819835715144018
• Sum of all divisors σ(n): 122939190012259911
• Sum of proper divisors (its aliquot sum) s(n): 41119354297115893
• 81819835715144018 is a deficient number, because the sum of its proper divisors (41119354297115893) is less than itself. Its deficiency is 40700481418028125

Bases of 81819835715144018

• Binary: 100100010101011101011010100000011011000011100100101010010₂
• Hexadecimal: 0x122AEB50361C952
• Base-36: MDMPLMJ8OK2

Squares and roots of 81819835715144018

• 81819835715144018 squared (81819835715144018²) is 6694485516453156619425026481184324
• 81819835715144018 cubed (81819835715144018³) is 547741705153608330509628995160042281777098863973832
• The square root of 81819835715144018 is 286041667.7953476379
• The cube root of 81819835715144018 is 434129.7362412265
• Being both a perfect square and a perfect cube, 81819835715144018 is also a perfect sixth number.

Scales and comparisons

• 81,819,835,715,144,018 seconds is equal to 2,601,617,690 years, 19 weeks, 2 days, 15 hours, 33 minutes, 38 seconds.
• To count from 1 to 81,819,835,715,144,018 would take you about seven billion, eight hundred four million, eight hundred fifty-three thousand and seventy-one 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 81819835715144018 cubic inches would be around 36177.5 feet tall.

Recreational maths with 81819835715144018

• 81819835715144018 backwards is 81044151753891818
• The number of decimal digits it has is: 17
• The sum of 81819835715144018's digits is 74
• More coming soon!