21353316768

Names of 21353316768

• Cardinal: 21353316768 can be written as Twenty-one billion, three hundred fifty-three million, three hundred sixteen thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1353316768 × 10¹⁰

Factors of 21353316768

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1891

Divisors of 21353316768

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 72 84 96 108 112 126 144 168 189 216 224 252 288 336 378 432 504 672 756 864 1008 1512 1879 2016 3024 3758 5637 6048 7516 11274 13153 15032 16911 22548 26306 30064 33822 39459 45096 50733 52612 60128 67644 78918 90192 101466 105224 118377 135288 157836 180384 202932 210448 236754 270576 315672 355131 405864 420896 473508 541152 631344 710262 811728 947016 1262688 1420524 1623456 1894032 2841048 3530641 3788064 5682096 7061282 10591923 11364192 14122564 21183846 24714487 28245128 31775769 42367692 49428974 56490256 63551538 74143461 84735384 95327307 98857948 112980512 127103076 148286922 169470768 190654614 197715896 222430383 254206152 296573844 338941536 381309228 395431792 444860766 508412304 593147688 667291149 762618456 790863584 889721532 1016824608 1186295376 1334582298 1525236912 1779443064 2372590752 2669164596 3050473824 3558886128 5338329192 7117772256 10676658384 21353316768
• Sum of all divisors σ(n): 71215623360
• Sum of proper divisors (its aliquot sum) s(n): 49862306592
• 21353316768 is an abundant number, because the sum of its proper divisors (49862306592) is greater than itself. Its abundance is 28508989824

Bases of 21353316768

• Binary: 10011111000110000011100000110100000₂
• Hexadecimal: 0x4F8C1C1A0
• Base-36: 9T57OO0

Squares and roots of 21353316768

• 21353316768 squared (21353316768²) is 455964136994549965824
• 21353316768 cubed (21353316768³) is 9736346652092372909843446136832
• The square root of 21353316768 is 146127.7412677005
• The cube root of 21353316768 is 2774.3108108803

Scales and comparisons

• 21,353,316,768 seconds is equal to 678 years, 50 weeks, 2 days, 20 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,353,316,768 would take you about one thousand, three hundred fifty-seven 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 21353316768 cubic inches would be around 231.2 feet tall.

Recreational maths with 21353316768

• 21353316768 backwards is 86761335312
• The number of decimal digits it has is: 11
• The sum of 21353316768's digits is 45
• More coming soon!