72147813935732378018

Names of 72147813935732378018

• Cardinal: 72147813935732378018 can be written as Seventy-two quintillion, one hundred forty-seven quadrillion, eight hundred thirteen trillion, nine hundred thirty-five billion, seven hundred thirty-two million, three hundred seventy-eight thousand and eighteen.

Scientific notation

• Scientific notation: 7.2147813935732378018 × 10¹⁹

Factors of 72147813935732378018

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 30006018577

Divisors of 72147813935732378018

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 7 14 172740497 345480994 1209183479 2418366958 29833278071 59666556142 208832946497 417665892994 5153415281123741287 10306830562247482574 36073906967866189009 72147813935732378018
• Sum of all divisors σ(n): 123681967467114236544
• Sum of proper divisors (its aliquot sum) s(n): 51534153531381858526
• 72147813935732378018 is a deficient number, because the sum of its proper divisors (51534153531381858526) is less than itself. Its deficiency is 20613660404350519492

Bases of 72147813935732378018

• Binary: 111110100101000000100001101000010011100000010011100100100110100010₂
• Hexadecimal: 0x3E9408684E04E49A2
• Base-36: F8589K0H9HW2Q

Squares and roots of 72147813935732378018

• 72147813935732378018 squared (72147813935732378018²) is 5205307055705059130171032539221249608324
• 72147813935732378018 cubed (72147813935732378018³) is 375551524933363538826291287164892771351639945246567607421832
• The square root of 72147813935732378018 is 8493986928.1587888501
• The cube root of 72147813935732378018 is 4163012.6017549119

Scales and comparisons

• 72,147,813,935,732,378,018 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 72,147,813,935,732,378,018 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 72147813935732378018 cubic inches would be around 346917.7 feet tall.

Recreational maths with 72147813935732378018

• 72147813935732378018 backwards is 81087323753931874127
• The number of decimal digits it has is: 20
• The sum of 72147813935732378018's digits is 89
• More coming soon!