21408118178016

Names of 21408118178016

• Cardinal: 21408118178016 can be written as Twenty-one trillion, four hundred eight billion, one hundred eighteen million, one hundred seventy-eight thousand and sixteen.

Scientific notation

• Scientific notation: 2.1408118178016 × 10¹³

Factors of 21408118178016

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4744707095

Divisors of 21408118178016

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 47 48 94 96 141 188 282 376 564 752 1128 1504 2256 4512 4744707043 9489414086 14234121129 18978828172 28468242258 37957656344 56936484516 75915312688 113872969032 151830625376 223001231021 227745938064 446002462042 455491876128 669003693063 892004924084 1338007386126 1784009848168 2676014772252 3568019696336 5352029544504 7136039392672 10704059089008 21408118178016
• Sum of all divisors σ(n): 57391976404224
• Sum of proper divisors (its aliquot sum) s(n): 35983858226208
• 21408118178016 is an abundant number, because the sum of its proper divisors (35983858226208) is greater than itself. Its abundance is 14575740048192

Bases of 21408118178016

• Binary: 100110111100001110111010001111000000011100000₂
• Hexadecimal: 0x1378774780E0
• Base-36: 7L6R4TL9C

Squares and roots of 21408118178016

• 21408118178016 squared (21408118178016²) is 458307523923899099465696256
• 21408118178016 cubed (21408118178016³) is 9811501634036727120292184491091592708096
• The square root of 21408118178016 is 4626890.7678932729
• The cube root of 21408118178016 is 27766.8212503519

Scales and comparisons

• 21,408,118,178,016 seconds is equal to 680,711 years, 48 weeks, 5 days, 13 hours, 53 minutes, 36 seconds.
• To count from 1 to 21,408,118,178,016 would take you about one million, seven hundred one thousand, seven hundred seventy-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 21408118178016 cubic inches would be around 2313.9 feet tall.

Recreational maths with 21408118178016

• 21408118178016 backwards is 61087181180412
• 21408118178016 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21408118178016's digits is 48
• More coming soon!