13009911721

Names of 13009911721

• Cardinal: 13009911721 can be written as Thirteen billion, nine million, nine hundred eleven thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.3009911721 × 10¹⁰

Factors of 13009911721

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 850

Divisors of 13009911721

• Number of divisors d(n): 9
• Complete list of divisors:
  1 167 683 27889 114061 466489 19048187 77903663 13009911721
• Sum of all divisors σ(n): 13107472861
• Sum of proper divisors (its aliquot sum) s(n): 97561140
• 13009911721 is a deficient number, because the sum of its proper divisors (97561140) is less than itself. Its deficiency is 12912350581

Bases of 13009911721

• Binary: 1100000111011100110111111110101001₂
• Hexadecimal: 0x307737FA9
• Base-36: 5Z5RK4P

Squares and roots of 13009911721

• 13009911721 squared (13009911721²) is 169257802988213181841
• 13009911721 cubed (13009911721³) is 2202029074967063499279930258361
• 13009911721 is a perfect square number. Its square root is 114061
• The cube root of 13009911721 is 2351.9321198445

Scales and comparisons

• 13,009,911,721 seconds is equal to 413 years, 35 weeks, 16 hours, 22 minutes, 1 second.
• To count from 1 to 13,009,911,721 would take you about eight hundred twenty-seven 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 13009911721 cubic inches would be around 196 feet tall.

Recreational maths with 13009911721

• 13009911721 backwards is 12711990031
• The number of decimal digits it has is: 11
• The sum of 13009911721's digits is 34
• More coming soon!