138666239481

Names of 138666239481

• Cardinal: 138666239481 can be written as One hundred thirty-eight billion, six hundred sixty-six million, two hundred thirty-nine thousand, four hundred eighty-one.

Scientific notation

• Scientific notation: 1.38666239481 × 10¹¹

Factors of 138666239481

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 40642

Divisors of 138666239481

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 7 11 21 33 43 77 129 231 301 347 473 903 1041 1419 2429 3311 3817 7287 9933 11451 14921 26719 40231 44763 80157 104447 120693 164131 281617 313341 442541 492393 844851 1148917 1327623 1729933 3097787 3446751 5189799 9293361 12109531 13960157 19029263 36328593 41880471 57087789 97721099 133204841 153561727 293163297 399614523 460685181 600286751 1074932089 1800860253 3224796267 4202007257 6603154261 12606021771 19809462783 46222079827 138666239481
• Sum of all divisors σ(n): 236556435456
• Sum of proper divisors (its aliquot sum) s(n): 97890195975
• 138666239481 is a deficient number, because the sum of its proper divisors (97890195975) is less than itself. Its deficiency is 40776043506

Bases of 138666239481

• Binary: 10000001001001001001101110010111111001₂
• Hexadecimal: 0x204926E5F9
• Base-36: 1RPAAR5L

Squares and roots of 138666239481

• 138666239481 squared (138666239481²) is 19228325971802043149361
• 138666239481 cubed (138666239481³) is 2666319654024634168474387878121641
• The square root of 138666239481 is 372379.1609112949
• The cube root of 138666239481 is 5175.9520693003

Scales and comparisons

• 138,666,239,481 seconds is equal to 4,409 years, 8 weeks, 1 day, 7 hours, 51 minutes, 21 seconds.
• To count from 1 to 138,666,239,481 would take you about eight thousand, eight 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 138666239481 cubic inches would be around 431.3 feet tall.

Recreational maths with 138666239481

• 138666239481 backwards is 184932666831
• The number of decimal digits it has is: 12
• The sum of 138666239481's digits is 57
• More coming soon!