138207631455

Names of 138207631455

• Cardinal: 138207631455 can be written as One hundred thirty-eight billion, two hundred seven million, six hundred thirty-one thousand, four hundred fifty-five.

Scientific notation

• Scientific notation: 1.38207631455 × 10¹¹

Factors of 138207631455

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 135294

Divisors of 138207631455

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 5 9 15 27 29 45 81 87 135 145 243 261 405 435 783 841 1215 1305 2349 2523 3915 4205 7047 7569 11745 12615 22707 35235 37845 68121 113535 135257 204363 340605 405771 676285 1021815 1217313 2028855 3651939 3922453 6086565 10955817 11767359 18259695 19612265 32867451 35302077 54779085 58836795 105906231 113751137 164337255 176510385 317718693 341253411 529531155 568755685 953156079 1023760233 1588593465 1706267055 3071280699 4765780395 5118801165 9213842097 15356403495 27641526291 46069210485 138207631455
• Sum of all divisors σ(n): 257296424112
• Sum of proper divisors (its aliquot sum) s(n): 119088792657
• 138207631455 is a deficient number, because the sum of its proper divisors (119088792657) is less than itself. Its deficiency is 19118838798

Bases of 138207631455

• Binary: 10000000101101110100010001100001011111₂
• Hexadecimal: 0x202DD1185F
• Base-36: 1RHP96XR

Squares and roots of 138207631455

• 138207631455 squared (138207631455²) is 19101349392401105417025
• 138207631455 cubed (138207631455³) is 2639952257118160155010795282521375
• The square root of 138207631455 is 371762.8699251715
• The cube root of 138207631455 is 5170.2396602447

Scales and comparisons

• 138,207,631,455 seconds is equal to 4,394 years, 29 weeks, 6 days, 8 hours, 44 minutes, 15 seconds.
• To count from 1 to 138,207,631,455 would take you about eight thousand, seven hundred eighty-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 138207631455 cubic inches would be around 430.9 feet tall.

Recreational maths with 138207631455

• 138207631455 backwards is 554136702831
• 138207631455 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138207631455's digits is 45
• More coming soon!