18099976828521991

Names of 18099976828521991

• Cardinal: 18099976828521991 can be written as Eighteen quadrillion, ninety-nine trillion, nine hundred seventy-six billion, eight hundred twenty-eight million, five hundred twenty-one thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 1.8099976828521991 × 10¹⁶

Factors of 18099976828521991

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 28240

Divisors of 18099976828521991

• Number of divisors d(n): 60
• Complete list of divisors:
  1 13 17 47 169 221 611 799 2197 2873 7943 10387 28163 28561 37349 103259 135031 366119 478771 485537 1323661 1342367 1755403 4759547 6224023 17207593 22502237 22820239 61874111 80912299 223698709 292529081 793154569 804363443 1051859887 2908083217 3802878053 10311009397 13483627673 13674178531 37278264743 37805081821 49437414689 134043122161 175287159749 484617441659 633730500631 642686390957 1742560588093 2278733076737 6300026741567 8238496508203 22653287645209 29623529997581 81900347640371 107100454606639 385105889968553 1064704519324823 1392305909886307 18099976828521991
• Sum of all divisors σ(n): 21204173037674592
• Sum of proper divisors (its aliquot sum) s(n): 3104196209152601
• 18099976828521991 is a deficient number, because the sum of its proper divisors (3104196209152601) is less than itself. Its deficiency is 14995780619369390

Bases of 18099976828521991

• Binary: 1000000010011011101010101000001010011101000111000000111₂
• Hexadecimal: 0x404DD5414E8E07
• Base-36: 4Y7WMKC5D6V

Squares and roots of 18099976828521991

• 18099976828521991 squared (18099976828521991²) is 327609161193032991593121570604081
• 18099976828521991 cubed (18099976828521991³) is 5929718226405423016535331716435517183996262845271
• The square root of 18099976828521991 is 134536154.3545897219
• The cube root of 18099976828521991 is 262558.4538777849

Scales and comparisons

• 18,099,976,828,521,991 seconds is equal to 575,523,276 years, 12 weeks, 4 days, 8 hours, 6 minutes, 31 seconds.
• To count from 1 to 18,099,976,828,521,991 would take you about one billion, seven hundred twenty-six million, five hundred sixty-nine thousand, eight hundred twenty-eight 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 18099976828521991 cubic inches would be around 21879.9 feet tall.

Recreational maths with 18099976828521991

• 18099976828521991 backwards is 19912582867999081
• The number of decimal digits it has is: 17
• The sum of 18099976828521991's digits is 94
• More coming soon!