138987147903907792

Names of 138987147903907792

• Cardinal: 138987147903907792 can be written as One hundred thirty-eight quadrillion, nine hundred eighty-seven trillion, one hundred forty-seven billion, nine hundred three million, nine hundred seven thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 1.38987147903907792 × 10¹⁷

Factors of 138987147903907792

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 163899938565984

Divisors of 138987147903907792

• Number of divisors d(n): 20
• Complete list of divisors:
  1 2 4 8 16 53 106 212 424 848 163899938565929 327799877131858 655599754263716 1311199508527432 2622399017054864 8686696743994237 17373393487988474 34746786975976948 69493573951953896 138987147903907792
• Sum of all divisors σ(n): 274368497159366820
• Sum of proper divisors (its aliquot sum) s(n): 135381349255459028
• 138987147903907792 is a deficient number, because the sum of its proper divisors (135381349255459028) is less than itself. Its deficiency is 3605798648448764

Bases of 138987147903907792

• Binary: 111101101110010000001001100011011001010000011011111010000₂
• Hexadecimal: 0x1EDC8131B2837D0
• Base-36: 120ITYAG6574

Squares and roots of 138987147903907792

• 138987147903907792 squared (138987147903907792²) is 19317427282462740139348144438315264
• 138987147903907792 cubed (138987147903907792³) is 2684874122830632427781836796853309588446438482137088
• The square root of 138987147903907792 is 372809801.2444251605
• The cube root of 138987147903907792 is 517994.1809793235

Scales and comparisons

• 138,987,147,903,907,792 seconds is equal to 4,419,361,387 years, 45 weeks, 1 day, 2 hours, 49 minutes, 52 seconds.
• To count from 1 to 138,987,147,903,907,792 would take you about thirteen billion, two hundred fifty-eight million, eighty-four thousand, one hundred sixty-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 138987147903907792 cubic inches would be around 43166.2 feet tall.

Recreational maths with 138987147903907792

• 138987147903907792 backwards is 297709309741789831
• The number of decimal digits it has is: 18
• The sum of 138987147903907792's digits is 94
• More coming soon!