21455329245

Names of 21455329245

• Cardinal: 21455329245 can be written as Twenty-one billion, four hundred fifty-five million, three hundred twenty-nine thousand, two hundred forty-five.

Scientific notation

• Scientific notation: 2.1455329245 × 10¹⁰

Factors of 21455329245

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 65

Divisors of 21455329245

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 7 15 19 21 31 35 57 93 95 105 133 155 217 285 361 399 465 589 651 665 961 1083 1085 1767 1805 1995 2527 2883 2945 3255 4123 4805 5415 6727 6859 7581 8835 11191 12369 12635 14415 18259 20181 20577 20615 29791 33573 33635 34295 37905 48013 54777 55955 61845 78337 89373 91295 100905 102885 127813 144039 148955 167865 208537 212629 235011 240065 273885 346921 383439 391685 446865 566029 625611 637887 639065 720195 1040763 1042685 1063145 1175055 1488403 1698087 1734605 1917195 2428447 2830145 3128055 3189435 3962203 4465209 5203815 6591499 7285341 7442015 8490435 10754551 11886609 12142235 19774497 19811015 22326045 32263653 32957495 36426705 46140493 53772755 59433045 75281857 98872485 138421479 161318265 204336469 225845571 230702465 376409285 613009407 692107395 1021682345 1129227855 1430355283 3065047035 4291065849 7151776415 21455329245
• Sum of all divisors σ(n): 42792222720
• Sum of proper divisors (its aliquot sum) s(n): 21336893475
• 21455329245 is a deficient number, because the sum of its proper divisors (21336893475) is less than itself. Its deficiency is 118435770

Bases of 21455329245

• Binary: 10011111110110101100101011111011101₂
• Hexadecimal: 0x4FED657DD
• Base-36: 9UTY5ZX

Squares and roots of 21455329245

• 21455329245 squared (21455329245²) is 460331153011352270025
• 21455329245 cubed (21455329245³) is 9876556449589036176064519381125
• The square root of 21455329245 is 146476.3777712979
• The cube root of 21455329245 is 2778.7217544065

Scales and comparisons

• 21,455,329,245 seconds is equal to 682 years, 11 weeks, 13 hours, 40 minutes, 45 seconds.
• To count from 1 to 21,455,329,245 would take you about one thousand, three hundred sixty-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 21455329245 cubic inches would be around 231.6 feet tall.

Recreational maths with 21455329245

• 21455329245 backwards is 54292355412
• The number of decimal digits it has is: 11
• The sum of 21455329245's digits is 42
• More coming soon!