18555943290921

Names of 18555943290921

• Cardinal: 18555943290921 can be written as Eighteen trillion, five hundred fifty-five billion, nine hundred forty-three million, two hundred ninety thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.8555943290921 × 10¹³

Factors of 18555943290921

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 333

Divisors of 18555943290921

• Number of divisors d(n): 117
• Complete list of divisors:
  1 3 9 19 27 57 81 171 243 311 361 513 729 933 1083 1539 2187 2799 3249 4617 5909 6561 8397 9747 13851 17727 19683 25191 29241 41553 53181 59049 75573 87723 96721 112271 124659 159543 177147 226719 263169 290163 336813 373977 478629 531441 680157 789507 870489 1010439 1121931 1435887 1837699 2040471 2368521 2611467 3031317 3365793 4307661 5513097 6121413 7105563 7834401 9093951 10097379 12922983 16539291 18364239 21316689 23503203 27281853 34916281 38768949 49617873 55092717 63950067 70509609 81845559 104748843 116306847 148853619 165278151 191850201 211528827 245536677 314246529 348920541 446560857 634586481 736610031 942739587 1046761623 1339682571 1903759443 2209830093 2828218761 3140284869 4019047713 5711278329 6629490279 8484656283 12057143139 17133834987 19888470837 25453968849 36171429417 51401504961 59665412511 76361906547 108514288251 229085719641 325542864753 687257158923 976628594259 2061771476769 6185314430307 18555943290921
• Sum of all divisors σ(n): 29470701782253
• Sum of proper divisors (its aliquot sum) s(n): 10914758491332
• 18555943290921 is a deficient number, because the sum of its proper divisors (10914758491332) is less than itself. Its deficiency is 7641184799589

Bases of 18555943290921

• Binary: 100001110000001100100011010001000100000101001₂
• Hexadecimal: 0x10E064688829
• Base-36: 6KSHDJ9K9

Squares and roots of 18555943290921

• 18555943290921 squared (18555943290921²) is 344323031415876071641028241
• 18555943290921 cubed (18555943290921³) is 6389238644711006302972919139265839899961
• 18555943290921 is a perfect square number. Its square root is 4307661
• The cube root of 18555943290921 is 26474.4946438443

Scales and comparisons

• 18,555,943,290,921 seconds is equal to 590,021 years, 31 weeks, 1 day, 3 hours, 55 minutes, 21 seconds.
• To count from 1 to 18,555,943,290,921 would take you about one million, four hundred seventy-five thousand and fifty-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 18555943290921 cubic inches would be around 2206.2 feet tall.

Recreational maths with 18555943290921

• 18555943290921 backwards is 12909234955581
• The number of decimal digits it has is: 14
• The sum of 18555943290921's digits is 63
• More coming soon!