81839216529009

Names of 81839216529009

• Cardinal: 81839216529009 can be written as Eighty-one trillion, eight hundred thirty-nine billion, two hundred sixteen million, five hundred twenty-nine thousand and nine.

Scientific notation

• Scientific notation: 8.1839216529009 × 10¹³

Factors of 81839216529009

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2715

Divisors of 81839216529009

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 81 443 1329 2269 3987 6807 11961 20421 35883 61263 183789 196249 588747 1005167 1766241 3015501 5148361 5298723 9046503 15445083 15896169 27139509 46335249 81418527 139005747 417017241 445288981 1335866943 2280723923 4007600829 6842171769 12022802487 20526515307 36068407461 61579545921 184738637763 1010360697889 3031082093667 9093246281001 27279738843003 81839216529009
• Sum of all divisors σ(n): 122584260657243
• Sum of proper divisors (its aliquot sum) s(n): 40745044128234
• 81839216529009 is a deficient number, because the sum of its proper divisors (40745044128234) is less than itself. Its deficiency is 41094172400775

Bases of 81839216529009

• Binary: 10010100110111010101101011011100000111001110001₂
• Hexadecimal: 0x4A6EAD6E0E71
• Base-36: T0CF0HU29

Squares and roots of 81839216529009

• 81839216529009 squared (81839216529009²) is 6697657362082019913738522081
• 81839216529009 cubed (81839216529009³) is 548131031092541660894395548654630323547729
• 81839216529009 is a perfect square number. Its square root is 9046503
• The cube root of 81839216529009 is 43416.4011236181

Scales and comparisons

• 81,839,216,529,009 seconds is equal to 2,602,233 years, 48 weeks, 6 days, 6 hours, 30 minutes, 9 seconds.
• To count from 1 to 81,839,216,529,009 would take you about six million, five hundred five thousand, five hundred eighty-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 81839216529009 cubic inches would be around 3618 feet tall.

Recreational maths with 81839216529009

• 81839216529009 backwards is 90092561293818
• The number of decimal digits it has is: 14
• The sum of 81839216529009's digits is 63
• More coming soon!