21455584044921

Names of 21455584044921

• Cardinal: 21455584044921 can be written as Twenty-one trillion, four hundred fifty-five billion, five hundred eighty-four million, forty-four thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 2.1455584044921 × 10¹³

Factors of 21455584044921

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 20613

Divisors of 21455584044921

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 9 13 17 27 39 51 81 117 153 169 221 243 351 459 507 663 1053 1377 1521 1621 1989 2873 3159 4131 4563 4863 5967 8619 13689 14589 17901 18959 21073 25857 27557 41067 43767 53703 56877 63219 77571 82671 131301 170631 189657 232713 246467 248013 273949 322303 358241 393903 511893 568971 698139 739401 744039 821847 966909 1074723 1535679 1706913 2218203 2232117 2465541 2900727 3204071 3224169 4189939 4607037 4657133 5120739 6654609 6696351 7396623 8702181 9612213 9672507 12569817 13971399 19963827 22189869 26106543 28836639 29017521 30732539 37709451 41914197 54469207 59891481 66569607 78319629 86509917 87052563 92197617 113128353 125742591 163407621 259529751 276592851 339385059 377227773 399523007 490222863 522453163 778589253 829778553 1018155177 1131683319 1198569021 1470668589 1567359489 2489335659 3595707063 4412005767 4702078467 5193799091 6791891119 7468006977 10787121189 13236017301 14106235401 15581397273 20375673357 32361363567 42318706203 46744191819 61127020071 88294584547 97084090701 126956118609 140232575457 183381060213 264883753641 420697726371 550143180639 794651260923 1262093179113 1650429541917 2383953782769 7151861348307 21455584044921
• Sum of all divisors σ(n): 36873482929920
• Sum of proper divisors (its aliquot sum) s(n): 15417898884999
• 21455584044921 is a deficient number, because the sum of its proper divisors (15417898884999) is less than itself. Its deficiency is 6037685159922

Bases of 21455584044921

• Binary: 100111000001110000100011101110010011101111001₂
• Hexadecimal: 0x138384772779
• Base-36: 7LSK4RUK9

Squares and roots of 21455584044921

• 21455584044921 squared (21455584044921²) is 460342086708668579745896241
• 21455584044921 cubed (21455584044921³) is 9876908330792149117938876724825149041961
• The square root of 21455584044921 is 4632017.2759739357
• The cube root of 21455584044921 is 27787.3275424199

Scales and comparisons

• 21,455,584,044,921 seconds is equal to 682,221 years, 10 weeks, 5 days, 55 minutes, 21 seconds.
• To count from 1 to 21,455,584,044,921 would take you about one million, seven hundred five thousand, five hundred fifty-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 21455584044921 cubic inches would be around 2315.6 feet tall.

Recreational maths with 21455584044921

• 21455584044921 backwards is 12944048555412
• The number of decimal digits it has is: 14
• The sum of 21455584044921's digits is 54
• More coming soon!