855381068834193721

Names of 855381068834193721

• Cardinal: 855381068834193721 can be written as Eight hundred fifty-five quadrillion, three hundred eighty-one trillion, sixty-eight billion, eight hundred thirty-four million, one hundred ninety-three thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 8.55381068834193721 × 10¹⁷

Factors of 855381068834193721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 503575751

Divisors of 855381068834193721

• Number of divisors d(n): 8
• Complete list of divisors:
  1 457 3744731 499830563 1711342067 228422567291 1871731004013553 855381068834193721
• Sum of all divisors σ(n): 857253030475692384
• Sum of proper divisors (its aliquot sum) s(n): 1871961641498663
• 855381068834193721 is a deficient number, because the sum of its proper divisors (1871961641498663) is less than itself. Its deficiency is 853509107192695058

Bases of 855381068834193721

• Binary: 101111011110111011001000110011010011011101001100000100111001₂
• Hexadecimal: 0xBDEEC8CD374C139
• Base-36: 6HYFA66Z5NI1

Squares and roots of 855381068834193721

• 855381068834193721 squared (855381068834193721²) is 731676772919927656671627220155825841
• 855381068834193721 cubed (855381068834193721³) is 625862460061401367217860303844476620203252746131744361
• The square root of 855381068834193721 is 924868135.9167877187
• The cube root of 855381068834193721 is 949262.9810242563

Scales and comparisons

• 855,381,068,834,193,721 seconds is equal to 27,198,472,121 years, 29 weeks, 14 hours, 42 minutes, 1 second.
• To count from 1 to 855,381,068,834,193,721 would take you about eighty-one billion, five hundred ninety-five million, four hundred sixteen thousand, three hundred sixty-four 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 855381068834193721 cubic inches would be around 79105.2 feet tall.

Recreational maths with 855381068834193721

• 855381068834193721 backwards is 127391438860183558
• The number of decimal digits it has is: 18
• The sum of 855381068834193721's digits is 82
• More coming soon!