21318723820686

Names of 21318723820686

• Cardinal: 21318723820686 can be written as Twenty-one trillion, three hundred eighteen billion, seven hundred twenty-three million, eight hundred twenty thousand, six hundred eighty-six.

Scientific notation

• Scientific notation: 2.1318723820686 × 10¹³

Factors of 21318723820686

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 287977

Divisors of 21318723820686

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 23 46 69 138 541 997 1082 1623 1994 2991 3246 5982 12443 22931 24886 37329 45862 68793 74658 137586 286411 539377 572822 859233 1078754 1618131 1718466 3236262 6587453 12405671 13174906 19762359 24811342 37217013 39524718 74434026 154948351 285551767 309896702 464845053 571103534 856655301 929690106 1713310602 3563812073 6567690641 7127624146 10691436219 13135381282 19703071923 21382872438 39406143846 154483505947 308967011894 463450517841 926901035682 3553120636781 7106241273562 10659361910343 21318723820686
• Sum of all divisors σ(n): 44618352016896
• Sum of proper divisors (its aliquot sum) s(n): 23299628196210
• 21318723820686 is an abundant number, because the sum of its proper divisors (23299628196210) is greater than itself. Its abundance is 1980904375524

Bases of 21318723820686

• Binary: 100110110001110100110111101011101110010001110₂
• Hexadecimal: 0x1363A6F5DC8E
• Base-36: 7K1OPQ9OU

Squares and roots of 21318723820686

• 21318723820686 squared (21318723820686²) is 454487985342684681481510596
• 21318723820686 cubed (21318723820686³) is 9689103839340681539794074524023912988856
• The square root of 21318723820686 is 4617220.3565225257
• The cube root of 21318723820686 is 27728.1184843231

Scales and comparisons

• 21,318,723,820,686 seconds is equal to 677,869 years, 24 weeks, 4 days, 15 hours, 58 minutes, 6 seconds.
• To count from 1 to 21,318,723,820,686 would take you about one million, six hundred ninety-four thousand, six hundred seventy-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 21318723820686 cubic inches would be around 2310.7 feet tall.

Recreational maths with 21318723820686

• 21318723820686 backwards is 68602832781312
• The number of decimal digits it has is: 14
• The sum of 21318723820686's digits is 57
• More coming soon!