21042240663689045

Names of 21042240663689045

• Cardinal: 21042240663689045 can be written as Twenty-one quadrillion, forty-two trillion, two hundred forty billion, six hundred sixty-three million, six hundred eighty-nine thousand and forty-five.

Scientific notation

• Scientific notation: 2.1042240663689045 × 10¹⁶

Factors of 21042240663689045

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 2092699

Divisors of 21042240663689045

• Number of divisors d(n): 18
• Complete list of divisors:
  1 5 31 155 961 4805 2092663 10463315 64872553 324362765 2011049143 10055245715 4379238431569 21896192157845 135756391378639 678781956893195 4208448132737809 21042240663689045
• Sum of all divisors σ(n): 26091515043380214
• Sum of proper divisors (its aliquot sum) s(n): 5049274379691169
• 21042240663689045 is a deficient number, because the sum of its proper divisors (5049274379691169) is less than itself. Its deficiency is 15992966283997876

Bases of 21042240663689045

• Binary: 1001010110000011100111001110000000010011001011101010101₂
• Hexadecimal: 0x4AC1CE70099755
• Base-36: 5R6UNWSLU1H

Squares and roots of 21042240663689045

• 21042240663689045 squared (21042240663689045²) is 442775892148608781004748453012025
• 21042240663689045 cubed (21042240663689045³) is 9316996882670650645142518031563394180778245766125
• The square root of 21042240663689045 is 145059438.3819579145
• The cube root of 21042240663689045 is 276077.2759520293

Scales and comparisons

• 21,042,240,663,689,045 seconds is equal to 669,078,165 years, 9 weeks, 3 days, 44 minutes, 5 seconds.
• To count from 1 to 21,042,240,663,689,045 would take you about two billion, seven million, two hundred thirty-four thousand, four hundred ninety-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 21042240663689045 cubic inches would be around 23006.4 feet tall.

Recreational maths with 21042240663689045

• 21042240663689045 backwards is 54098636604224012
• The number of decimal digits it has is: 17
• The sum of 21042240663689045's digits is 62
• More coming soon!