138394367216405267808

Names of 138394367216405267808

• Cardinal: 138394367216405267808 can be written as One hundred thirty-eight quintillion, three hundred ninety-four quadrillion, three hundred sixty-seven trillion, two hundred sixteen billion, four hundred five million, two hundred sixty-seven thousand, eight hundred eight.

Scientific notation

• Scientific notation: 1.38394367216405267808 × 10²⁰

Factors of 138394367216405267808

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 767220857818571

Divisors of 138394367216405267808

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 96 1879 3758 5637 7516 11274 15032 22548 30064 45096 60128 90192 180384 767220857816687 1534441715633374 2301662573450061 3068883431266748 4603325146900122 6137766862533496 9206650293800244 12275533725066992 18413300587600488 24551067450133984 36826601175200976 73653202350401952 1441607991837554873 2883215983675109746 4324823975512664619 5766431967350219492 8649647951025329238 11532863934700438984 17299295902050658476 23065727869400877968 34598591804101316952 46131455738801755936 69197183608202633904 138394367216405267808
• Sum of all divisors σ(n): 363478553599234106880
• Sum of proper divisors (its aliquot sum) s(n): 225084186382828839072
• 138394367216405267808 is an abundant number, because the sum of its proper divisors (225084186382828839072) is greater than itself. Its abundance is 86689819166423571264

Bases of 138394367216405267808

• Binary: 1111000000010011011100011111011110100010000110011010100010101100000₂
• Hexadecimal: 0x7809B8FBD10CD4560
• Base-36: T7GECSPTZH0TC

Squares and roots of 138394367216405267808

• 138394367216405267808 squared (138394367216405267808²) is 19153000877229229154338515007052201124864
• 138394367216405267808 cubed (138394367216405267808³) is 2650667436699394166876274352271017615822399834150072767578112
• The square root of 138394367216405267808 is 11764113532.9613878989
• The cube root of 138394367216405267808 is 5172567.1586918499

Scales and comparisons

• 138,394,367,216,405,267,808 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,394,367,216,405,267,808 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 138394367216405267808 cubic inches would be around 431047.3 feet tall.

Recreational maths with 138394367216405267808

• 138394367216405267808 backwards is 808762504612763493831
• The number of decimal digits it has is: 21
• The sum of 138394367216405267808's digits is 93
• More coming soon!