138638909417524820927

Names of 138638909417524820927

• Cardinal: 138638909417524820927 can be written as One hundred thirty-eight quintillion, six hundred thirty-eight quadrillion, nine hundred nine trillion, four hundred seventeen billion, five hundred twenty-four million, eight hundred twenty thousand, nine hundred twenty-seven.

Scientific notation

• Scientific notation: 1.38638909417524820927 × 10²⁰

Factors of 138638909417524820927

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1868055

Divisors of 138638909417524820927

• Number of divisors d(n): 32
• Complete list of divisors:
  1 7 2137 11239 14959 78673 739373 1115299 5175611 7807093 24017743 168124201 1580040101 2383393963 8309813147 11060280707 12534845461 16683757741 58168692029 87743918227 824621967527 5772353772689 17758070695139 26786964750157 124306494865973 187508753251099 1762217144605199 9267926293035953 12335520012236393 64875484051251671 19805558488217831561 138638909417524820927
• Sum of all divisors σ(n): 158533072209174912000
• Sum of proper divisors (its aliquot sum) s(n): 19894162791650091073
• 138638909417524820927 is a deficient number, because the sum of its proper divisors (19894162791650091073) is less than itself. Its deficiency is 118744746625874729854

Bases of 138638909417524820927

• Binary: 1111000010000000000010110011001001100100111000111111111101110111111₂
• Hexadecimal: 0x784005993271FFBBF
• Base-36: T9BA7RU51IZZZ

Squares and roots of 138638909417524820927

• 138638909417524820927 squared (138638909417524820927²) is 19220747204480652481806273376123417139329
• 138638909417524820927 cubed (138638909417524820927³) is 2664743430619136606319684369723779618419611010610663333937983
• The square root of 138638909417524820927 is 11774502512.5278571543
• The cube root of 138638909417524820927 is 5175611.9999999989

Scales and comparisons

• 138,638,909,417,524,820,927 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,638,909,417,524,820,927 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 138638909417524820927 cubic inches would be around 431301 feet tall.

Recreational maths with 138638909417524820927

• 138638909417524820927 backwards is 729028425714909836831
• The number of decimal digits it has is: 21
• The sum of 138638909417524820927's digits is 98
• More coming soon!