21385814349664

Names of 21385814349664

• Cardinal: 21385814349664 can be written as Twenty-one trillion, three hundred eighty-five billion, eight hundred fourteen million, three hundred forty-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1385814349664 × 10¹³

Factors of 21385814349664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3306359

Divisors of 21385814349664

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 8 16 17 32 34 68 136 272 544 11933 23866 47732 95464 190928 202861 381856 405722 811444 1622888 3245776 3294407 6491552 6588814 13177628 26355256 52710512 56004919 105421024 112009838 224019676 448039352 896078704 1792157408 39312158731 78624317462 157248634924 314497269848 628994539696 668306698427 1257989079392 1336613396854 2673226793708 5346453587416 10692907174832 21385814349664
• Sum of all divisors σ(n): 44583737391648
• Sum of proper divisors (its aliquot sum) s(n): 23197923041984
• 21385814349664 is an abundant number, because the sum of its proper divisors (23197923041984) is greater than itself. Its abundance is 1812108692320

Bases of 21385814349664

• Binary: 100110111001101000101110111100001011101100000₂
• Hexadecimal: 0x137345DE1760
• Base-36: 7KWI9P55S

Squares and roots of 21385814349664

• 21385814349664 squared (21385814349664²) is 457353055398294655256912896
• 21385814349664 cubed (21385814349664³) is 9780867534999524177307763743810534866944
• The square root of 21385814349664 is 4624479.9004497793
• The cube root of 21385814349664 is 27757.1750403309

Scales and comparisons

• 21,385,814,349,664 seconds is equal to 680,002 years, 38 weeks, 5 days, 10 hours, 1 minute, 4 seconds.
• To count from 1 to 21,385,814,349,664 would take you about one million, seven hundred thousand and six 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 21385814349664 cubic inches would be around 2313.1 feet tall.

Recreational maths with 21385814349664

• 21385814349664 backwards is 46694341858312
• The number of decimal digits it has is: 14
• The sum of 21385814349664's digits is 64
• More coming soon!