21665409139201

Names of 21665409139201

• Cardinal: 21665409139201 can be written as Twenty-one trillion, six hundred sixty-five billion, four hundred nine million, one hundred thirty-nine thousand, two hundred one.

Scientific notation

• Scientific notation: 2.1665409139201 × 10¹³

Factors of 21665409139201

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 977747198

Divisors of 21665409139201

• Number of divisors d(n): 4
• Complete list of divisors:
  1 22159 977725039 21665409139201
• Sum of all divisors σ(n): 21666386886400
• Sum of proper divisors (its aliquot sum) s(n): 977747199
• 21665409139201 is a deficient number, because the sum of its proper divisors (977747199) is less than itself. Its deficiency is 21664431392002

Bases of 21665409139201

• Binary: 100111011010001011111000001000000001000000001₂
• Hexadecimal: 0x13B45F040201
• Base-36: 7OGY97THD

Squares and roots of 21665409139201

• 21665409139201 squared (21665409139201²) is 469389953168974215794918401
• 21665409139201 cubed (21665409139201³) is 10169525381236223366725547092159445337601
• The square root of 21665409139201 is 4654611.5991778517
• The cube root of 21665409139201 is 27877.6160006001

Scales and comparisons

• 21,665,409,139,201 seconds is equal to 688,892 years, 51 weeks, 5 days, 5 hours, 20 minutes, 1 second.
• To count from 1 to 21,665,409,139,201 would take you about one million, seven hundred twenty-two thousand, two hundred thirty-two 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 21665409139201 cubic inches would be around 2323.1 feet tall.

Recreational maths with 21665409139201

• 21665409139201 backwards is 10293190456612
• The number of decimal digits it has is: 14
• The sum of 21665409139201's digits is 49
• More coming soon!