21118043978231290

Names of 21118043978231290

• Cardinal: 21118043978231290 can be written as Twenty-one quadrillion, one hundred eighteen trillion, forty-three billion, nine hundred seventy-eight million, two hundred thirty-one thousand, two hundred ninety.

Scientific notation

• Scientific notation: 2.111804397823129 × 10¹⁶

Factors of 21118043978231290

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 330753

Divisors of 21118043978231290

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 5 10 139 278 695 1390 19321 38642 96605 193210 330607 661214 1653035 3306070 45954373 91908746 229771865 459543730 6387657847 12775315694 31938289235 63876578470 109300988449 218601976898 546504942245 1093009884490 15192837394411 30385674788822 75964186972055 151928373944110 2111804397823129 4223608795646258 10559021989115645 21118043978231290
• Sum of all divisors σ(n): 38288033463028986
• Sum of proper divisors (its aliquot sum) s(n): 17169989484797696
• 21118043978231290 is a deficient number, because the sum of its proper divisors (17169989484797696) is less than itself. Its deficiency is 3948054493433594

Bases of 21118043978231290

• Binary: 1001011000001101011111111000101101011000110110111111010₂
• Hexadecimal: 0x4B06BFC5AC6DFA
• Base-36: 5RXPZH0WG6Y

Squares and roots of 21118043978231290

• 21118043978231290 squared (21118043978231290²) is 445971781466510849267396735064100
• 21118043978231290 cubed (21118043978231290³) is 9418051694059930262378402626984334639842775689000
• The square root of 21118043978231290 is 145320487.1249449467
• The cube root of 21118043978231290 is 276408.3955163695

Scales and comparisons

• 21,118,043,978,231,290 seconds is equal to 671,488,476 years, 5 weeks, 4 days, 14 hours, 28 minutes, 10 seconds.
• To count from 1 to 21,118,043,978,231,290 would take you about two billion, fourteen million, four hundred sixty-five thousand, four hundred twenty-eight 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 21118043978231290 cubic inches would be around 23034 feet tall.

Recreational maths with 21118043978231290

• 21118043978231290 backwards is 09213287934081112
• The number of decimal digits it has is: 17
• The sum of 21118043978231290's digits is 61
• More coming soon!