21989391005593921

Names of 21989391005593921

• Cardinal: 21989391005593921 can be written as Twenty-one quadrillion, nine hundred eighty-nine trillion, three hundred ninety-one billion, five million, five hundred ninety-three thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 2.1989391005593921 × 10¹⁶

Factors of 21989391005593921

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 16869313

Divisors of 21989391005593921

• Number of divisors d(n): 32
• Complete list of divisors:
  1 7 13 47 91 329 611 4277 310489 2173423 4036357 14592983 16558757 28254499 102150881 115911299 189708779 215263841 778261579 1327961453 1506846887 5447831053 10117400527 70821803689 5141311902173 35989183315211 66837054728249 241641659402131 467859383097743 1691491615814917 3141341572227703 21989391005593921
• Sum of all divisors σ(n): 27639783475153920
• Sum of proper divisors (its aliquot sum) s(n): 5650392469559999
• 21989391005593921 is a deficient number, because the sum of its proper divisors (5650392469559999) is less than itself. Its deficiency is 16338998536033922

Bases of 21989391005593921

• Binary: 1001110000111110011110000001111101101110011000101000001₂
• Hexadecimal: 0x4E1F3C0FB73141
• Base-36: 60IL6RRH9HD

Squares and roots of 21989391005593921

• 21989391005593921 squared (21989391005593921²) is 483533316796894832215513952154241
• 21989391005593921 cubed (21989391005593921³) is 10632603167278635226496135296596737679979603968961
• The square root of 21989391005593921 is 148288202.5165654267
• The cube root of 21989391005593921 is 280158.8851879271

Scales and comparisons

• 21,989,391,005,593,921 seconds is equal to 699,194,616 years, 16 weeks, 6 days, 12 hours, 32 minutes, 1 second.
• To count from 1 to 21,989,391,005,593,921 would take you about two billion, ninety-seven million, five hundred eighty-three thousand, eight hundred forty-eight 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 21989391005593921 cubic inches would be around 23346.6 feet tall.

Recreational maths with 21989391005593921

• 21989391005593921 backwards is 12939550019398912
• The number of decimal digits it has is: 17
• The sum of 21989391005593921's digits is 76
• More coming soon!