138640780407750625

Names of 138640780407750625

• Cardinal: 138640780407750625 can be written as One hundred thirty-eight quadrillion, six hundred forty trillion, seven hundred eighty billion, four hundred seven million, seven hundred fifty thousand, six hundred twenty-five.

Scientific notation

• Scientific notation: 1.38640780407750625 × 10¹⁷

Factors of 138640780407750625

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 91541

Divisors of 138640780407750625

• Number of divisors d(n): 45
• Complete list of divisors:
  1 5 25 125 163 625 815 4075 20375 26569 91373 101875 132845 456865 664225 2284325 3321125 11421625 14893799 16605625 57108125 74468995 372344975 1861724875 2427689237 8349025129 9308624375 12138446185 41745125645 60692230925 208725628225 303461154625 1043628141125 1360891096027 1517305773125 5218140705625 6804455480135 34022277400675 170111387003375 221825248652401 850556935016875 1109126243262005 5545631216310025 27728156081550125 138640780407750625
• Sum of all divisors σ(n): 174316803481739919
• Sum of proper divisors (its aliquot sum) s(n): 35676023073989294
• 138640780407750625 is a deficient number, because the sum of its proper divisors (35676023073989294) is less than itself. Its deficiency is 102964757333761331

Bases of 138640780407750625

• Binary: 111101100100011010000111000100011100101100011111111100001₂
• Hexadecimal: 0x1EC8D0E23963FE1
• Base-36: 11X41Z9BWHK1

Squares and roots of 138640780407750625

• 138640780407750625 squared (138640780407750625²) is 19221265992070129557235572187890625
• 138640780407750625 cubed (138640780407750625³) is 2664851317565559798074034742669240636532519775390625
• 138640780407750625 is a perfect square number. Its square root is 372344975
• The cube root of 138640780407750625 is 517563.5282246773

Scales and comparisons

• 138,640,780,407,750,625 seconds is equal to 4,408,347,972 years, 45 weeks, 3 days, 17 hours, 50 minutes, 25 seconds.
• To count from 1 to 138,640,780,407,750,625 would take you about thirteen billion, two hundred twenty-five million, forty-three thousand, nine hundred eighteen 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 138640780407750625 cubic inches would be around 43130.3 feet tall.

Recreational maths with 138640780407750625

• 138640780407750625 backwards is 526057704087046831
• The number of decimal digits it has is: 18
• The sum of 138640780407750625's digits is 73
• More coming soon!