891397014342021121

Names of 891397014342021121

• Cardinal: 891397014342021121 can be written as Eight hundred ninety-one quadrillion, three hundred ninety-seven trillion, fourteen billion, three hundred forty-two million, twenty-one thousand, one hundred twenty-one.

Scientific notation

• Scientific notation: 8.91397014342021121 × 10¹⁷

Factors of 891397014342021121

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 2959721

Divisors of 891397014342021121

• Number of divisors d(n): 27
• Complete list of divisors:
  1 11 29 121 319 841 3509 9251 101761 2959681 32556491 85830749 358121401 944138239 2489091721 10385520629 27380008931 301180098241 8759711621761 96356827839371 254031637031069 1059925106233081 2794348007341759 7366917473901001 30737828080759349 81036092212911011 891397014342021121
• Sum of all divisors σ(n): 1014751616258101449
• Sum of proper divisors (its aliquot sum) s(n): 123354601916080328
• 891397014342021121 is a deficient number, because the sum of its proper divisors (123354601916080328) is less than itself. Its deficiency is 768042412425940793

Bases of 891397014342021121

• Binary: 110001011110111000001101110010011001101100110011000000000001₂
• Hexadecimal: 0xC5EE0DC99B33001
• Base-36: 6RT1VB5AD05D

Squares and roots of 891397014342021121

• 891397014342021121 squared (891397014342021121²) is 794588637177869408085643835210096641
• 891397014342021121 cubed (891397014342021121³) is 708293938810448273670927542318846576964126497673154561
• 891397014342021121 is a perfect square number. Its square root is 944138239
• The cube root of 891397014342021121 is 962403.2000130855

Scales and comparisons

• 891,397,014,342,021,121 seconds is equal to 28,343,667,784 years, 3 weeks, 6 days, 32 minutes, 1 second.
• To count from 1 to 891,397,014,342,021,121 would take you about eighty-five billion, thirty-one million, three thousand, three hundred fifty-two 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 891397014342021121 cubic inches would be around 80200.3 feet tall.

Recreational maths with 891397014342021121

• 891397014342021121 backwards is 121120243410793198
• The number of decimal digits it has is: 18
• The sum of 891397014342021121's digits is 58
• More coming soon!