138894201792759598180

Names of 138894201792759598180

• Cardinal: 138894201792759598180 can be written as One hundred thirty-eight quintillion, eight hundred ninety-four quadrillion, two hundred one trillion, seven hundred ninety-two billion, seven hundred fifty-nine million, five hundred ninety-eight thousand, one hundred eighty.

Scientific notation

• Scientific notation: 1.3889420179275959818 × 10²⁰

Factors of 138894201792759598180

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 6944710089637979916

Divisors of 138894201792759598180

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 6944710089637979909 13889420179275959818 27778840358551919636 34723550448189899545 69447100896379799090 138894201792759598180
• Sum of all divisors σ(n): 291677823764795156220
• Sum of proper divisors (its aliquot sum) s(n): 152783621972035558040
• 138894201792759598180 is an abundant number, because the sum of its proper divisors (152783621972035558040) is greater than itself. Its abundance is 13889420179275959860

Bases of 138894201792759598180

• Binary: 1111000011110001011010101001010001100110010110111000000110001100100₂
• Hexadecimal: 0x7878B54A332DC0C64
• Base-36: TB93XD89AILPG

Squares and roots of 138894201792759598180

• 138894201792759598180 squared (138894201792759598180²) is 19291599291647823577052088866515059312400
• 138894201792759598180 cubed (138894201792759598180³) is 2679491284919190931819913067510949056411537469817091091432000
• The square root of 138894201792759598180 is 11785338425.0414972197
• The cube root of 138894201792759598180 is 5178786.8761248879

Scales and comparisons

• 138,894,201,792,759,598,180 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,894,201,792,759,598,180 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 138894201792759598180 cubic inches would be around 431565.6 feet tall.

Recreational maths with 138894201792759598180

• 138894201792759598180 backwards is 081895957297102498831
• The number of decimal digits it has is: 21
• The sum of 138894201792759598180's digits is 106
• More coming soon!