138820452211212013978

Names of 138820452211212013978

• Cardinal: 138820452211212013978 can be written as One hundred thirty-eight quintillion, eight hundred twenty quadrillion, four hundred fifty-two trillion, two hundred eleven billion, two hundred twelve million, thirteen thousand, nine hundred seventy-eight.

Scientific notation

• Scientific notation: 1.38820452211212013978 × 10²⁰

Factors of 138820452211212013978

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 556089741

Divisors of 138820452211212013978

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 1973 3946 72791947 145583894 483295819 966591638 143618511431 287237022862 953542650887 1907085301774 35180043641969593 70360087283939186 69410226105606006989 138820452211212013978
• Sum of all divisors σ(n): 208336221740895685920
• Sum of proper divisors (its aliquot sum) s(n): 69515769529683671942
• 138820452211212013978 is a deficient number, because the sum of its proper divisors (69515769529683671942) is less than itself. Its deficiency is 69304682681528342036

Bases of 138820452211212013978

• Binary: 1111000011010000101010100011100100010101000011000011101000110011010₂
• Hexadecimal: 0x7868551C8A861D19A
• Base-36: TAOXRBM7QUPAY

Squares and roots of 138820452211212013978

• 138820452211212013978 squared (138820452211212013978²) is 19271117952125398541123070960642867384484
• 138820452211212013978 cubed (138820452211212013978³) is 2675225308729653820434841709861023932447713860645634908317352
• The square root of 138820452211212013978 is 11782209139.6822528979
• The cube root of 138820452211212013978 is 5177870.1088317687

Scales and comparisons

• 138,820,452,211,212,013,978 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 138,820,452,211,212,013,978 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 138820452211212013978 cubic inches would be around 431489.2 feet tall.

Recreational maths with 138820452211212013978

• 138820452211212013978 backwards is 879310212112254028831
• The number of decimal digits it has is: 21
• The sum of 138820452211212013978's digits is 70
• More coming soon!