21640638802500

Names of 21640638802500

• Cardinal: 21640638802500 can be written as Twenty-one trillion, six hundred forty billion, six hundred thirty-eight million, eight hundred two thousand, five hundred.

Scientific notation

• Scientific notation: 2.16406388025 × 10¹³

Factors of 21640638802500

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 31023

Divisors of 21640638802500

• Number of divisors d(n): 135
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 25 30 36 45 50 60 75 90 100 125 150 180 225 250 300 375 450 500 625 750 900 1125 1250 1500 1875 2250 2500 3750 4500 5625 7500 11250 22500 31013 62026 93039 124052 155065 186078 279117 310130 372156 465195 558234 620260 775325 930390 1116468 1395585 1550650 1860780 2325975 2791170 3101300 3876625 4651950 5582340 6977925 7753250 9303900 11629875 13955850 15506500 19383125 23259750 27911700 34889625 38766250 46519500 58149375 69779250 77532500 116298750 139558500 174448125 232597500 348896250 697792500 961806169 1923612338 2885418507 3847224676 4809030845 5770837014 8656255521 9618061690 11541674028 14427092535 17312511042 19236123380 24045154225 28854185070 34625022084 43281277605 48090308450 57708370140 72135462675 86562555210 96180616900 120225771125 144270925350 173125110420 216406388025 240451542250 288541850700 360677313375 432812776050 480903084500 601128855625 721354626750 865625552100 1082031940125 1202257711250 1442709253500 1803386566875 2164063880250 2404515422500 3606773133750 4328127760500 5410159700625 7213546267500 10820319401250 21640638802500
• Sum of all divisors σ(n): 68358730432993
• Sum of proper divisors (its aliquot sum) s(n): 46718091630493
• 21640638802500 is an abundant number, because the sum of its proper divisors (46718091630493) is greater than itself. Its abundance is 25077452827993

Bases of 21640638802500

• Binary: 100111010111010011010100101101010101001000100₂
• Hexadecimal: 0x13AE9A96AA44
• Base-36: 7O5KLLJD0

Squares and roots of 21640638802500

• 21640638802500 squared (21640638802500²) is 468317247780268634006250000
• 21640638802500 cubed (21640638802500³) is 10134684404193688394949324777515625000000
• 21640638802500 is a perfect square number. Its square root is 4651950
• The cube root of 21640638802500 is 27866.9876719043

Scales and comparisons

• 21,640,638,802,500 seconds is equal to 688,105 years, 19 weeks, 3 days, 12 hours, 15 minutes.
• To count from 1 to 21,640,638,802,500 would take you about one million, seven hundred twenty thousand, two hundred sixty-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 21640638802500 cubic inches would be around 2322.2 feet tall.

Recreational maths with 21640638802500

• 21640638802500 backwards is 00520883604612
• 21640638802500 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21640638802500's digits is 45
• More coming soon!