138568521637

Names of 138568521637

• Cardinal: 138568521637 can be written as One hundred thirty-eight billion, five hundred sixty-eight million, five hundred twenty-one thousand, six hundred thirty-seven.

Scientific notation

• Scientific notation: 1.38568521637 × 10¹¹

Factors of 138568521637

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 63

Divisors of 138568521637

• Number of divisors d(n): 54
• Complete list of divisors:
  1 7 13 43 49 91 301 343 559 637 1849 2107 2401 3913 4459 12943 14749 16807 24037 27391 31213 90601 103243 117649 168259 191737 218491 634207 722701 823543 1177813 1342159 1529437 4439449 5058907 5764801 8244691 9395113 10706059 31076143 35412349 57712837 65765791 74942413 217533001 247886443 403989859 460360537 1522731007 2827929013 3222523759 10659117049 19795503091 138568521637
• Sum of all divisors σ(n): 178241877702
• Sum of proper divisors (its aliquot sum) s(n): 39673356065
• 138568521637 is a deficient number, because the sum of its proper divisors (39673356065) is less than itself. Its deficiency is 98895165572

Bases of 138568521637

• Binary: 10000001000011010100111101011110100101₂
• Hexadecimal: 0x204353D7A5
• Base-36: 1RNO4BL1

Squares and roots of 138568521637

• 138568521637 squared (138568521637²) is 19201235188663737159769
• 138568521637 cubed (138568521637³) is 2660686773697476839740731602421853
• The square root of 138568521637 is 372247.9303327287
• The cube root of 138568521637 is 5174.7359556225

Scales and comparisons

• 138,568,521,637 seconds is equal to 4,406 years, 2 weeks, 4 days, 8 hours, 37 seconds.
• To count from 1 to 138,568,521,637 would take you about eight thousand, eight hundred twelve 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 138568521637 cubic inches would be around 431.2 feet tall.

Recreational maths with 138568521637

• 138568521637 backwards is 736125865831
• The number of decimal digits it has is: 12
• The sum of 138568521637's digits is 55
• More coming soon!