21365438244362521

Names of 21365438244362521

• Cardinal: 21365438244362521 can be written as Twenty-one quadrillion, three hundred sixty-five trillion, four hundred thirty-eight billion, two hundred forty-four million, three hundred sixty-two thousand, five hundred twenty-one.

Scientific notation

• Scientific notation: 2.1365438244362521 × 10¹⁶

Factors of 21365438244362521

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 146169211

Divisors of 21365438244362521

• Number of divisors d(n): 3
• Complete list of divisors:
  1 146169211 21365438244362521
• Sum of all divisors σ(n): 21365438390531733
• Sum of proper divisors (its aliquot sum) s(n): 146169212
• 21365438244362521 is a deficient number, because the sum of its proper divisors (146169212) is less than itself. Its deficiency is 21365438098193309

Bases of 21365438244362521

• Binary: 1001011111001111100000010111101000001101001100100011001₂
• Hexadecimal: 0x4BE7C0BD069919
• Base-36: 5UDEYTVFB4P

Squares and roots of 21365438244362521

• 21365438244362521 squared (21365438244362521²) is 456481951373668643611437669475441
• 21365438244362521 cubed (21365438244362521³) is 9752936941740212666293350389583480555541510346761
• 21365438244362521 is a perfect square number. Its square root is 146169211
• The cube root of 21365438244362521 is 277483.5668946909

Scales and comparisons

• 21,365,438,244,362,521 seconds is equal to 679,354,848 years, 27 weeks, 4 days, 7 hours, 22 minutes, 1 second.
• To count from 1 to 21,365,438,244,362,521 would take you about two billion, thirty-eight million, sixty-four thousand, five hundred forty-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 21365438244362521 cubic inches would be around 23123.6 feet tall.

Recreational maths with 21365438244362521

• 21365438244362521 backwards is 12526344283456312
• The number of decimal digits it has is: 17
• The sum of 21365438244362521's digits is 61
• More coming soon!