21397731645155441337

Names of 21397731645155441337

• Cardinal: 21397731645155441337 can be written as Twenty-one quintillion, three hundred ninety-seven quadrillion, seven hundred thirty-one trillion, six hundred forty-five billion, one hundred fifty-five million, four hundred forty-one thousand, three hundred thirty-seven.

Scientific notation

• Scientific notation: 2.1397731645155441337 × 10¹⁹

Factors of 21397731645155441337

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 22615

Divisors of 21397731645155441337

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 9 27 41 123 369 1107 1681 5043 15129 22571 45387 67713 68921 203139 206763 609417 620289 925411 1860867 2776233 8328699 24986097 37941851 113825553 341476659 509450041 1024429977 1528350123 1555615891 4585050369 4666847673 13755151107 14000543019 20887451681 42001629057 62662355043 187987065129 563961195387 856385518921 2569156556763 7707469670289 23122409010867 35111806275761 105335418827283 316006256481849 948018769445547
• Sum of all divisors σ(n): 21398223273716906670
• Sum of proper divisors (its aliquot sum) s(n): 491628561465333
• 21397731645155441337 is a deficient number, because the sum of its proper divisors (491628561465333) is less than itself. Its deficiency is 21397240016593976004

Bases of 21397731645155441337

• Binary: 10010100011110100000000111000111110101100100111111111101010111001₂
• Hexadecimal: 0x128F4038FAC9FFAB9
• Base-36: 4IKIMTHBMGJW9

Squares and roots of 21397731645155441337

• 21397731645155441337 squared (21397731645155441337²) is 457862919558086590056356180739248347569
• 21397731645155441337 cubed (21397731645155441337³) is 9797227882971329668077867410715684770373472532526166059753
• The square root of 21397731645155441337 is 4625768222.1610975715
• 21397731645155441337 is a perfect cube number. Its cube root is 2776233

Scales and comparisons

• 21,397,731,645,155,441,337 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 21,397,731,645,155,441,337 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and 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 21397731645155441337 cubic inches would be around 231352.8 feet tall.

Recreational maths with 21397731645155441337

• 21397731645155441337 backwards is 73314455154613779312
• The number of decimal digits it has is: 20
• The sum of 21397731645155441337's digits is 81
• More coming soon!