21209307050385

Names of 21209307050385

• Cardinal: 21209307050385 can be written as Twenty-one trillion, two hundred nine billion, three hundred seven million, fifty thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 2.1209307050385 × 10¹³

Factors of 21209307050385

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 36477033

Divisors of 21209307050385

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 5 9 15 27 45 59 73 135 177 219 295 365 531 657 885 1095 1593 1971 2655 3285 4307 7965 9855 12921 21535 38763 64605 116289 193815 581445 36476893 109430679 182384465 328292037 547153395 984876111 1641460185 2152136687 2662813189 4924380555 6456410061 7988439567 10760683435 13314065945 19369230183 23965318701 32282050305 39942197835 58107690549 71895956103 96846150915 119826593505 157105978151 290538452745 359479780515 471317934453 785529890755 1413953803359 2356589672265 4241861410077 7069769016795 21209307050385
• Sum of all divisors σ(n): 38869778246400
• Sum of proper divisors (its aliquot sum) s(n): 17660471196015
• 21209307050385 is a deficient number, because the sum of its proper divisors (17660471196015) is less than itself. Its deficiency is 3548835854370

Bases of 21209307050385

• Binary: 100110100101000101101001101100111000110010001₂
• Hexadecimal: 0x134A2D367191
• Base-36: 7INF5T5E9

Squares and roots of 21209307050385

• 21209307050385 squared (21209307050385²) is 449834705557510868928648225
• 21209307050385 cubed (21209307050385³) is 9540682392088775814459646430000015816625
• The square root of 21209307050385 is 4605356.3434749543
• The cube root of 21209307050385 is 27680.5995911379

Scales and comparisons

• 21,209,307,050,385 seconds is equal to 674,390 years, 18 weeks, 4 days, 20 hours, 39 minutes, 45 seconds.
• To count from 1 to 21,209,307,050,385 would take you about one million, six hundred eighty-five thousand, nine hundred seventy-five 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 21209307050385 cubic inches would be around 2306.7 feet tall.

Recreational maths with 21209307050385

• 21209307050385 backwards is 58305070390212
• 21209307050385 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21209307050385's digits is 45
• More coming soon!