991138991169599

Names of 991138991169599

• Cardinal: 991138991169599 can be written as Nine hundred ninety-one trillion, one hundred thirty-eight billion, nine hundred ninety-one million, one hundred sixty-nine thousand, five hundred ninety-nine.

Scientific notation

• Scientific notation: 9.91138991169599 × 10¹⁴

Factors of 991138991169599

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 212703

Divisors of 991138991169599

• Number of divisors d(n): 32
• Complete list of divisors:
  1 109 149 367 787 16241 40003 54683 85783 117263 211291 288829 5960447 12781667 23030719 31482359 31482361 43035521 77543797 166286017 3431577131 4690871789 8452273873 11554025753 18125175853 24776616533 61026968239 1259388807077 2700651202097 6651939538051 9093018267611 991138991169599
• Sum of all divisors σ(n): 1010976438912000
• Sum of proper divisors (its aliquot sum) s(n): 19837447742401
• 991138991169599 is a deficient number, because the sum of its proper divisors (19837447742401) is less than itself. Its deficiency is 971301543427198

Bases of 991138991169599

• Binary: 11100001010110111110000111011111011110000000111111₂
• Hexadecimal: 0x3856F877DE03F
• Base-36: 9RBUYSW3ZZ

Squares and roots of 991138991169599

• 991138991169599 squared (991138991169599²) is 982356499816690444497981820801
• 991138991169599 cubed (991138991169599³) is 973651830197212932131482086101459170617028799
• The square root of 991138991169599 is 31482359.9999999841
• The cube root of 991138991169599 is 99703.7563023173

Scales and comparisons

• 991,138,991,169,599 seconds is equal to 31,515,154 years, 6 weeks, 3 days, 11 hours, 59 minutes, 59 seconds.
• To count from 1 to 991,138,991,169,599 would take you about seventy-eight million, seven hundred eighty-seven thousand, eight hundred eighty-five 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 991138991169599 cubic inches would be around 8308.6 feet tall.

Recreational maths with 991138991169599

• 991138991169599 backwards is 995961199831199
• The number of decimal digits it has is: 15
• The sum of 991138991169599's digits is 89
• More coming soon!