21998491137513

Names of 21998491137513

• Cardinal: 21998491137513 can be written as Twenty-one trillion, nine hundred ninety-eight billion, four hundred ninety-one million, one hundred thirty-seven thousand, five hundred thirteen.

Scientific notation

• Scientific notation: 2.1998491137513 × 10¹³

Factors of 21998491137513

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5043973

Divisors of 21998491137513

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 11 19 27 33 57 99 171 209 297 513 627 773 1881 2319 5643 6957 8503 14687 20871 25509 44061 76527 132183 161557 229581 396549 484671 1454013 4362039 5043167 15129501 45388503 55474837 95820173 136165509 166424511 287460519 499273533 862381557 1054021903 1497820599 2587144671 3162065709 3898368091 9486197127 11695104273 28458591381 35085312819 42882049001 74068993729 105255938457 128646147003 222206981187 385938441009 666620943561 814758931019 1157815323027 1999862830683 2444276793057 7332830379171 21998491137513
• Sum of all divisors σ(n): 37472755507200
• Sum of proper divisors (its aliquot sum) s(n): 15474264369687
• 21998491137513 is a deficient number, because the sum of its proper divisors (15474264369687) is less than itself. Its deficiency is 6524226767826

Bases of 21998491137513

• Binary: 101000000000111101100001111111111010111101001₂
• Hexadecimal: 0x1401EC3FF5E9
• Base-36: 7SPYTN089

Squares and roots of 21998491137513

• 21998491137513 squared (21998491137513²) is 483933612327238004675825169
• 21998491137513 cubed (21998491137513³) is 10645809281925397132674577634806725464697
• The square root of 21998491137513 is 4690254.9117839001
• The cube root of 21998491137513 is 28019.7527022063

Scales and comparisons

• 21,998,491,137,513 seconds is equal to 699,483 years, 50 weeks, 3 days, 22 hours, 38 minutes, 33 seconds.
• To count from 1 to 21,998,491,137,513 would take you about one million, seven hundred forty-eight thousand, seven hundred 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 21998491137513 cubic inches would be around 2335 feet tall.

Recreational maths with 21998491137513

• 21998491137513 backwards is 31573119489912
• The number of decimal digits it has is: 14
• The sum of 21998491137513's digits is 63
• More coming soon!