21090209462130998

Names of 21090209462130998

• Cardinal: 21090209462130998 can be written as Twenty-one quadrillion, ninety trillion, two hundred nine billion, four hundred sixty-two million, one hundred thirty thousand, nine hundred ninety-eight.

Scientific notation

• Scientific notation: 2.1090209462130998 × 10¹⁶

Factors of 21090209462130998

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 5382217592

Divisors of 21090209462130998

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 7 14 53 106 371 742 5281 10562 36967 73934 279893 559786 1959251 3918502 5382212249 10764424498 37675485743 75350971486 285257249197 570514498394 1996800744379 3993601488758 28423462886969 56846925773938 198964240208783 397928480417566 1506443533009357 3012887066018714 10545104731065499 21090209462130998
• Sum of all divisors σ(n): 36843783255432000
• Sum of proper divisors (its aliquot sum) s(n): 15753573793301002
• 21090209462130998 is a deficient number, because the sum of its proper divisors (15753573793301002) is less than itself. Its deficiency is 5336635668829996

Bases of 21090209462130998

• Binary: 1001010111011010110111100001011001110101001100100110110₂
• Hexadecimal: 0x4AED6F0B3A9936
• Base-36: 5RNUSH0OIT2

Squares and roots of 21090209462130998

• 21090209462130998 squared (21090209462130998²) is 444796935156559879962223312476004
• 21090209462130998 cubed (21090209462130998³) is 9380860530565747140660505338493693538237579571992
• The square root of 21090209462130998 is 145224686.1319761917
• The cube root of 21090209462130998 is 276286.9026257375

Scales and comparisons

• 21,090,209,462,130,998 seconds is equal to 670,603,424 years, 30 weeks, 6 days, 10 hours, 36 minutes, 38 seconds.
• To count from 1 to 21,090,209,462,130,998 would take you about two billion, eleven million, eight hundred ten thousand, two hundred seventy-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 21090209462130998 cubic inches would be around 23023.9 feet tall.

Recreational maths with 21090209462130998

• 21090209462130998 backwards is 89903126490209012
• The number of decimal digits it has is: 17
• The sum of 21090209462130998's digits is 65
• More coming soon!