138845293893978

Names of 138845293893978

• Cardinal: 138845293893978 can be written as One hundred thirty-eight trillion, eight hundred forty-five billion, two hundred ninety-three million, eight hundred ninety-three thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 1.38845293893978 × 10¹⁴

Factors of 138845293893978

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2850

Divisors of 138845293893978

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 7 14 21 42 977 1861 1954 2931 3722 5583 5862 6839 11166 13027 13678 20517 26054 39081 41034 78162 954529 1818197 1909058 2863587 3463321 3636394 5454591 5727174 6681703 6926642 10389963 10909182 12727379 13363406 20045109 20779926 24243247 25454758 38182137 40090218 48486494 72729741 76364274 145459482 1776378469 3383664617 3552756938 5329135407 6767329234 10150993851 10658270814 12434649283 20301987702 23685652319 24869298566 37303947849 47371304638 71056956957 74607895698 142113913914 3305840330809 6611680661618 9917520992427 19835041984854 23140882315663 46281764631326 69422646946989 138845293893978
• Sum of all divisors σ(n): 317856634826976
• Sum of proper divisors (its aliquot sum) s(n): 179011340932998
• 138845293893978 is an abundant number, because the sum of its proper divisors (179011340932998) is greater than itself. Its abundance is 40166047039020

Bases of 138845293893978

• Binary: 11111100100011101110000011010111101100101011010₂
• Hexadecimal: 0x7E47706BD95A
• Base-36: 1D7SNB3SD6

Squares and roots of 138845293893978

• 138845293893978 squared (138845293893978²) is 19278015636505124490304664484
• 138845293893978 cubed (138845293893978³) is 2676661746743257368549404981141257158077352
• The square root of 138845293893978 is 11783263.2956230763
• The cube root of 138845293893978 is 51781.7894741387

Scales and comparisons

• 138,845,293,893,978 seconds is equal to 4,414,850 years, 45 weeks, 1 day, 8 hours, 46 minutes, 18 seconds.
• To count from 1 to 138,845,293,893,978 would take you about eleven million, thirty-seven thousand, one hundred twenty-seven 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 138845293893978 cubic inches would be around 4315.1 feet tall.

Recreational maths with 138845293893978

• 138845293893978 backwards is 879398392548831
• The number of decimal digits it has is: 15
• The sum of 138845293893978's digits is 87
• More coming soon!