128407727098373990401

Names of 128407727098373990401

• Cardinal: 128407727098373990401 can be written as One hundred twenty-eight quintillion, four hundred seven quadrillion, seven hundred twenty-seven trillion, ninety-eight billion, three hundred seventy-three million, nine hundred ninety thousand, four hundred one.

Scientific notation

• Scientific notation: 1.28407727098373990401 × 10²⁰

Factors of 128407727098373990401

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 128407727098373990401

Divisors of 128407727098373990401

• Number of divisors d(n): 2
• Complete list of divisors:
  1 128407727098373990401
• Sum of all divisors σ(n): 128407727098373990402
• Sum of proper divisors (its aliquot sum) s(n): 1
• 128407727098373990401 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 128407727098373990400

Bases of 128407727098373990401

• Binary: 1101111011000000011111000110111011001110001111000011110100000000001₂
• Hexadecimal: 0x6F603E37671E1E801
• Base-36: R3KXWBUWIG3K1

Squares and roots of 128407727098373990401

• 128407727098373990401 squared (128407727098373990401²) is 16488544378570490016301899041416040140801
• 128407727098373990401 cubed (128407727098373990401³) is 2117256506812908038693475696657261925639349003585588262451201
• The square root of 128407727098373990401 is 11331713334.6362936663
• The cube root of 128407727098373990401 is 5045029.6107428735

Scales and comparisons

• 128,407,727,098,373,990,401 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 128,407,727,098,373,990,401 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 128407727098373990401 cubic inches would be around 420419.1 feet tall.

Recreational maths with 128407727098373990401

• 128407727098373990401 backwards is 104099373890727704821
• The number of decimal digits it has is: 21
• The sum of 128407727098373990401's digits is 91
• More coming soon!