138670372244378782721

Names of 138670372244378782721

• Cardinal: 138670372244378782721 can be written as One hundred thirty-eight quintillion, six hundred seventy quadrillion, three hundred seventy-two trillion, two hundred forty-four billion, three hundred seventy-eight million, seven hundred eighty-two thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 1.38670372244378782721 × 10²⁰

Factors of 138670372244378782721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1347967524735

Divisors of 138670372244378782721

• Number of divisors d(n): 8
• Complete list of divisors:
  1 83 1239443 102873769 1347966285209 111881201672347 1670727376438298587 138670372244378782721
• Sum of all divisors σ(n): 140341212850089152160
• Sum of proper divisors (its aliquot sum) s(n): 1670840605710369439
• 138670372244378782721 is a deficient number, because the sum of its proper divisors (1670840605710369439) is less than itself. Its deficiency is 136999531638668413282

Bases of 138670372244378782721

• Binary: 1111000010001110000001000001101100101100001011000101000110000000001₂
• Hexadecimal: 0x7847020D961628C01
• Base-36: T9JW0EX9C9DDT

Squares and roots of 138670372244378782721

• 138670372244378782721 squared (138670372244378782721²) is 19229472138394577477377473868197728163841
• 138670372244378782721 cubed (138670372244378782721³) is 2666558059494086535119007576831887913370856421669122027791361
• The square root of 138670372244378782721 is 11775838494.3229746523
• The cube root of 138670372244378782721 is 5176003.4895853203

Scales and comparisons

• 138,670,372,244,378,782,721 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,670,372,244,378,782,721 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 138670372244378782721 cubic inches would be around 431333.6 feet tall.

Recreational maths with 138670372244378782721

• 138670372244378782721 backwards is 127287873442273076831
• The number of decimal digits it has is: 21
• The sum of 138670372244378782721's digits is 92
• More coming soon!