821131743221913601

Names of 821131743221913601

• Cardinal: 821131743221913601 can be written as Eight hundred twenty-one quadrillion, one hundred thirty-one trillion, seven hundred forty-three billion, two hundred twenty-one million, nine hundred thirteen thousand, six hundred one.

Scientific notation

• Scientific notation: 8.21131743221913601 × 10¹⁷

Factors of 821131743221913601

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 906163199

Divisors of 821131743221913601

• Number of divisors d(n): 3
• Complete list of divisors:
  1 906163199 821131743221913601
• Sum of all divisors σ(n): 821131744128076801
• Sum of proper divisors (its aliquot sum) s(n): 906163200
• 821131743221913601 is a deficient number, because the sum of its proper divisors (906163200) is less than itself. Its deficiency is 821131742315750401

Bases of 821131743221913601

• Binary: 101101100101001111101111100001001100100010100001100000000001₂
• Hexadecimal: 0xB653EF84C8A1801
• Base-36: 68L6WR7SZK01

Squares and roots of 821131743221913601

• 821131743221913601 squared (821131743221913601²) is 674257339726658653018318732308787201
• 821131743221913601 cubed (821131743221913601³) is 553654104749921237578387448979369477425619354716620801
• 821131743221913601 is a perfect square number. Its square root is 906163199
• The cube root of 821131743221913601 is 936420.5743285039

Scales and comparisons

• 821,131,743,221,913,601 seconds is equal to 26,109,449,507 years, 10 weeks, 6 days, 1 second.
• To count from 1 to 821,131,743,221,913,601 would take you about seventy-eight billion, three hundred twenty-eight million, three hundred forty-eight thousand, five hundred twenty-one 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 821131743221913601 cubic inches would be around 78035 feet tall.

Recreational maths with 821131743221913601

• 821131743221913601 backwards is 106319122347131128
• The number of decimal digits it has is: 18
• The sum of 821131743221913601's digits is 55
• More coming soon!