21006727985013448639

Names of 21006727985013448639

• Cardinal: 21006727985013448639 can be written as Twenty-one quintillion, six quadrillion, seven hundred twenty-seven trillion, nine hundred eighty-five billion, thirteen million, four hundred forty-eight thousand, six hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1006727985013448639 × 10¹⁹

Factors of 21006727985013448639

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 139343971

Divisors of 21006727985013448639

• Number of divisors d(n): 32
• Complete list of divisors:
  1 13 41 533 2749 35737 102967 112709 1338571 1465217 4221647 54881411 139238201 283056283 1810096613 3679731679 5708766241 11605307603 74213961133 150868998839 382765814549 4975955589137 14336939842367 15693398396509 186380217950771 204014179154617 587814533537047 7641588935981611 39412247626666883 512359219146669479 1615902152693342203 21006727985013448639
• Sum of all divisors σ(n): 23183057039777712000
• Sum of proper divisors (its aliquot sum) s(n): 2176329054764263361
• 21006727985013448639 is a deficient number, because the sum of its proper divisors (2176329054764263361) is less than itself. Its deficiency is 18830398930249185278

Bases of 21006727985013448639

• Binary: 10010001110000110111000111100110111001111111110111101111110111111₂
• Hexadecimal: 0x12386E3CDCFFBDFBF
• Base-36: 4FLKNL7LL960V

Squares and roots of 21006727985013448639

• 21006727985013448639 squared (21006727985013448639²) is 441282620636347184027483105695890952321
• 21006727985013448639 cubed (21006727985013448639³) is 9269903976221627549547986549093237553996954284386131341119
• The square root of 21006727985013448639 is 4583309719.5163942617
• The cube root of 21006727985013448639 is 2759218.7798504111

Scales and comparisons

• 21,006,727,985,013,448,639 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 21,006,727,985,013,448,639 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 21006727985013448639 cubic inches would be around 229934.9 feet tall.

Recreational maths with 21006727985013448639

• 21006727985013448639 backwards is 93684431058972760012
• The number of decimal digits it has is: 20
• The sum of 21006727985013448639's digits is 85
• More coming soon!