128125012407247021

Names of 128125012407247021

• Cardinal: 128125012407247021 can be written as One hundred twenty-eight quadrillion, one hundred twenty-five trillion, twelve billion, four hundred seven million, two hundred forty-seven thousand and twenty-one.

Scientific notation

• Scientific notation: 1.28125012407247021 × 10¹⁷

Factors of 128125012407247021

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 305179153

Divisors of 128125012407247021

• Number of divisors d(n): 32
• Complete list of divisors:
  1 17 41 193 697 3121 3281 7913 53057 127961 134521 602353 2175337 10240001 24696473 305175781 419840041 5187988277 12512207021 58898925733 212707519357 952453612501 1001281737461 2414855955053 16191711412517 39050598112541 41052551235901 183823547212693 663860167913197 3125000302615781 7536765435720413 128125012407247021
• Sum of all divisors σ(n): 139735415382476256
• Sum of proper divisors (its aliquot sum) s(n): 11610402975229235
• 128125012407247021 is a deficient number, because the sum of its proper divisors (11610402975229235) is less than itself. Its deficiency is 116514609432017786

Bases of 128125012407247021

• Binary: 111000111001100010000010100011011011000000110000010101101₂
• Hexadecimal: 0x1C731051B6060AD
• Base-36: Z1KIY4PHIGD

Squares and roots of 128125012407247021

• 128125012407247021 squared (128125012407247021²) is 16416018804357203071028640113374441
• 128125012407247021 cubed (128125012407247021³) is 2103302612985867050516434137438246705471135354790261
• The square root of 128125012407247021 is 357945543.9131028225
• The cube root of 128125012407247021 is 504132.4350774243

Scales and comparisons

• 128,125,012,407,247,021 seconds is equal to 4,073,979,077 years, 45 weeks, 3 hours, 17 minutes, 1 second.
• To count from 1 to 128,125,012,407,247,021 would take you about twelve billion, two hundred twenty-one million, nine hundred thirty-seven thousand, two hundred thirty-three 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 128125012407247021 cubic inches would be around 42011 feet tall.

Recreational maths with 128125012407247021

• 128125012407247021 backwards is 120742704210521821
• The number of decimal digits it has is: 18
• The sum of 128125012407247021's digits is 49
• More coming soon!