138279972915

Names of 138279972915

• Cardinal: 138279972915 can be written as One hundred thirty-eight billion, two hundred seventy-nine million, nine hundred seventy-two thousand, nine hundred fifteen.

Scientific notation

• Scientific notation: 1.38279972915 × 10¹¹

Factors of 138279972915

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 137973

Divisors of 138279972915

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 63 105 315 3259 9777 16295 22813 29331 48885 68439 114065 134699 146655 205317 342195 404097 673495 942893 1026585 1212291 2020485 2828679 4714465 6061455 8486037 14143395 42430185 438984041 1316952123 2194920205 3072888287 3950856369 6584760615 9218664861 15364441435 19754281845 27655994583 46093324305 138279972915
• Sum of all divisors σ(n): 274012128000
• Sum of proper divisors (its aliquot sum) s(n): 135732155085
• 138279972915 is a deficient number, because the sum of its proper divisors (135732155085) is less than itself. Its deficiency is 2547817830

Bases of 138279972915

• Binary: 10000000110010001000001111000000110011₂
• Hexadecimal: 0x203220F033
• Base-36: 1RIWBPYR

Squares and roots of 138279972915

• 138279972915 squared (138279972915²) is 19121350909373133597225
• 138279972915 cubed (138279972915³) is 2644099885846327533452949519160875
• The square root of 138279972915 is 371860.1523624171
• The cube root of 138279972915 is 5171.1415820921

Scales and comparisons

• 138,279,972,915 seconds is equal to 4,396 years, 45 weeks, 3 days, 15 hours, 35 minutes, 15 seconds.
• To count from 1 to 138,279,972,915 would take you about eight thousand, seven hundred ninety-three 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 138279972915 cubic inches would be around 430.9 feet tall.

Recreational maths with 138279972915

• 138279972915 backwards is 519279972831
• 138279972915 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138279972915's digits is 63
• More coming soon!