21128160040273521

Names of 21128160040273521

• Cardinal: 21128160040273521 can be written as Twenty-one quadrillion, one hundred twenty-eight trillion, one hundred sixty billion, forty million, two hundred seventy-three thousand, five hundred twenty-one.

Scientific notation

• Scientific notation: 2.1128160040273521 × 10¹⁶

Factors of 21128160040273521

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 14367

Divisors of 21128160040273521

• Number of divisors d(n): 18
• Complete list of divisors:
  1 3 9 5413 8951 16239 26853 48717 80559 48451763 80120401 145355289 240361203 436065867 721083609 433691730613 1301075191839 3903225575517
• Sum of all divisors σ(n): 21129896478820850
• Sum of proper divisors (its aliquot sum) s(n): 1736438547329
• 21128160040273521 is a deficient number, because the sum of its proper divisors (1736438547329) is less than itself. Its deficiency is 21126423601726192

Bases of 21128160040273521

• Binary: 1001011000011111111001100011001111101010100011001110001₂
• Hexadecimal: 0x4B0FF319F54671
• Base-36: 5S1B2Q71VU9

Squares and roots of 21128160040273521

• 21128160040273521 squared (21128160040273521²) is 446399146687410792524676493737441
• 21128160040273521 cubed (21128160040273521³) is 9431592613053150618685687896292853227301198599761
• 21128160040273521 is a perfect square number. Its square root is 145355289
• The cube root of 21128160040273521 is 276452.5239423187

Scales and comparisons

• 21,128,160,040,273,521 seconds is equal to 671,810,135 years, 30 weeks, 5 days, 25 minutes, 21 seconds.
• To count from 1 to 21,128,160,040,273,521 would take you about two billion, fifteen million, four hundred thirty thousand, four hundred six 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 21128160040273521 cubic inches would be around 23037.7 feet tall.

Recreational maths with 21128160040273521

• 21128160040273521 backwards is 12537204006182112
• The number of decimal digits it has is: 17
• The sum of 21128160040273521's digits is 45
• More coming soon!