138812891935796169729

Names of 138812891935796169729

• Cardinal: 138812891935796169729 can be written as One hundred thirty-eight quintillion, eight hundred twelve quadrillion, eight hundred ninety-one trillion, nine hundred thirty-five billion, seven hundred ninety-six million, one hundred sixty-nine thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 1.38812891935796169729 × 10²⁰

Factors of 138812891935796169729

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4206451270781702127

Divisors of 138812891935796169729

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 11 33 4206451270781702113 12619353812345106339 46270963978598723243 138812891935796169729
• Sum of all divisors σ(n): 201909660997521701472
• Sum of proper divisors (its aliquot sum) s(n): 63096769061725531743
• 138812891935796169729 is a deficient number, because the sum of its proper divisors (63096769061725531743) is less than itself. Its deficiency is 75716122874070637986

Bases of 138812891935796169729

• Binary: 1111000011001101010011101011100000011011101110100010000110000000001₂
• Hexadecimal: 0x7866A75C0DDD10C01
• Base-36: TAMVBFFMWSAGX

Squares and roots of 138812891935796169729

• 138812891935796169729 squared (138812891935796169729²) is 19269018967579025289332824357467375933441
• 138812891935796169729 cubed (138812891935796169729³) is 2674788247655353915670302708132146927096254685521603843007489
• The square root of 138812891935796169729 is 11781888300.9386984143
• The cube root of 138812891935796169729 is 5177776.1101110435

Scales and comparisons

• 138,812,891,935,796,169,729 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,812,891,935,796,169,729 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 138812891935796169729 cubic inches would be around 431481.3 feet tall.

Recreational maths with 138812891935796169729

• 138812891935796169729 backwards is 927961697539198218831
• The number of decimal digits it has is: 21
• The sum of 138812891935796169729's digits is 114
• More coming soon!