21991126338144

Names of 21991126338144

• Cardinal: 21991126338144 can be written as Twenty-one trillion, nine hundred ninety-one billion, one hundred twenty-six million, three hundred thirty-eight thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 2.1991126338144 × 10¹³

Factors of 21991126338144

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 159544

Divisors of 21991126338144

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 96 108 144 216 288 432 864 159539 319078 478617 638156 957234 1276312 1435851 1914468 2552624 2871702 3828936 4307553 5105248 5743404 7657872 8615106 11486808 15315744 17230212 22973616 34460424 45947232 68920848 137841696 25452692521 50905385042 76358077563 101810770084 152716155126 203621540168 229074232689 305432310252 407243080336 458148465378 610864620504 687222698067 814486160672 916296930756 1221729241008 1374445396134 1832593861512 2443458482016 2748890792268 3665187723024 5497781584536 7330375446048 10995563169072 21991126338144
• Sum of all divisors σ(n): 64141187193720
• Sum of proper divisors (its aliquot sum) s(n): 42150060855576
• 21991126338144 is an abundant number, because the sum of its proper divisors (42150060855576) is greater than itself. Its abundance is 20158934517432

Bases of 21991126338144

• Binary: 101000000000000110101010001100000101001100000₂
• Hexadecimal: 0x140035460A60
• Base-36: 7SML0TSO0

Squares and roots of 21991126338144

• 21991126338144 squared (21991126338144²) is 483609637620210734629364736
• 21991126338144 cubed (21991126338144³) is 10635120639250091715235461859844645289984
• The square root of 21991126338144 is 4689469.7288866255
• The cube root of 21991126338144 is 28016.6254742397

Scales and comparisons

• 21,991,126,338,144 seconds is equal to 699,249 years, 41 weeks, 2 days, 5 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,991,126,338,144 would take you about one million, seven hundred forty-eight thousand, one hundred twenty-four 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 21991126338144 cubic inches would be around 2334.7 feet tall.

Recreational maths with 21991126338144

• 21991126338144 backwards is 44183362119912
• 21991126338144 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21991126338144's digits is 54
• More coming soon!