21250109356731

Names of 21250109356731

• Cardinal: 21250109356731 can be written as Twenty-one trillion, two hundred fifty billion, one hundred nine million, three hundred fifty-six thousand, seven hundred thirty-one.

Scientific notation

• Scientific notation: 2.1250109356731 × 10¹³

Factors of 21250109356731

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 5862

Divisors of 21250109356731

• Number of divisors d(n): 54
• Complete list of divisors:
  1 3 9 19 57 61 171 183 549 1159 3477 3721 5779 10431 11163 17337 33489 52011 70699 109801 212097 329403 352519 636291 988209 1057557 3172671 6697861 20093583 21503659 33396841 60280749 64510977 100190523 193532931 300571569 408569521 634539979 1225708563 1903619937 2037207301 3677125689 5710859811 6111621903 18334865709 38706938719 116120816157 124269645361 348362448471 372808936083 1118426808249 2361123261859 7083369785577 21250109356731
• Sum of all divisors σ(n): 32854149963180
• Sum of proper divisors (its aliquot sum) s(n): 11604040606449
• 21250109356731 is a deficient number, because the sum of its proper divisors (11604040606449) is less than itself. Its deficiency is 9646068750282

Bases of 21250109356731

• Binary: 100110101001110101101001110000011101010111011₂
• Hexadecimal: 0x1353AD383ABB
• Base-36: 7J65YG6GR

Squares and roots of 21250109356731

• 21250109356731 squared (21250109356731²) is 451567147673026394615006361
• 21250109356731 cubed (21250109356731³) is 9595851269958907401992276984349183165891
• The square root of 21250109356731 is 4609784.0900340441
• The cube root of 21250109356731 is 27698.3387973315

Scales and comparisons

• 21,250,109,356,731 seconds is equal to 675,687 years, 38 weeks, 5 days, 18 hours, 38 minutes, 51 seconds.
• To count from 1 to 21,250,109,356,731 would take you about one million, six hundred eighty-nine thousand, two hundred nineteen 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 21250109356731 cubic inches would be around 2308.2 feet tall.

Recreational maths with 21250109356731

• 21250109356731 backwards is 13765390105212
• The number of decimal digits it has is: 14
• The sum of 21250109356731's digits is 45
• More coming soon!