21373814189947878

Names of 21373814189947878

• Cardinal: 21373814189947878 can be written as Twenty-one quadrillion, three hundred seventy-three trillion, eight hundred fourteen billion, one hundred eighty-nine million, nine hundred forty-seven thousand, eight hundred seventy-eight.

Scientific notation

• Scientific notation: 2.1373814189947878 × 10¹⁶

Factors of 21373814189947878

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 651362657705

Divisors of 21373814189947878

• Number of divisors d(n): 24
• Complete list of divisors:
  1 2 3 6 9 18 1823 3646 5469 10938 16407 32814 651362655877 1302725311754 1954087967631 3908175935262 5862263902893 11724527805786 1187434121663771 2374868243327542 3562302364991313 7124604729982626 10686907094973939 21373814189947878
• Sum of all divisors σ(n): 46335333888537408
• Sum of proper divisors (its aliquot sum) s(n): 24961519698589530
• 21373814189947878 is an abundant number, because the sum of its proper divisors (24961519698589530) is greater than itself. Its abundance is 3587705508641652

Bases of 21373814189947878

• Binary: 1001011111011110101111011101010010010010111101111100110₂
• Hexadecimal: 0x4BEF5EEA497BE6
• Base-36: 5UGDUOP5ZHI

Squares and roots of 21373814189947878

• 21373814189947878 squared (21373814189947878²) is 456839933026417264213580356702884
• 21373814189947878 cubed (21373814189947878³) is 9764411843054875555720000098156023417771892280152
• The square root of 21373814189947878 is 146197859.7310777255
• The cube root of 21373814189947878 is 277519.8230135331

Scales and comparisons

• 21,373,814,189,947,878 seconds is equal to 679,621,177 years, 35 weeks, 6 days, 22 hours, 51 minutes, 18 seconds.
• To count from 1 to 21,373,814,189,947,878 would take you about two billion, thirty-eight million, eight hundred sixty-three thousand, five hundred thirty-three 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 21373814189947878 cubic inches would be around 23126.7 feet tall.

Recreational maths with 21373814189947878

• 21373814189947878 backwards is 87874998141837312
• The number of decimal digits it has is: 17
• The sum of 21373814189947878's digits is 90
• More coming soon!