21423505664

Names of 21423505664

• Cardinal: 21423505664 can be written as Twenty-one billion, four hundred twenty-three million, five hundred five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1423505664 × 10¹⁰

Factors of 21423505664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 168

Divisors of 21423505664

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 8 11 16 22 23 32 44 46 53 64 79 88 92 106 128 158 176 184 212 253 256 316 352 368 424 506 583 632 704 736 848 869 1012 1166 1219 1264 1408 1472 1696 1738 1817 2024 2332 2438 2528 2816 2944 3392 3476 3634 4048 4187 4664 4876 5056 5888 6241 6784 6952 7268 8096 8374 9328 9752 10112 12482 13409 13568 13904 14536 16192 16748 18656 19504 19987 20224 24964 26818 27808 29072 32384 33496 37312 39008 39974 46057 49928 53636 55616 58144 64768 66992 68651 74624 78016 79948 92114 96301 99856 107272 111232 116288 133984 137302 143543 149248 156032 159896 184228 192602 199712 214544 222464 232576 267968 274604 287086 312064 319792 330773 368456 385204 399424 429088 465152 535936 549208 574172 639584 661546 736912 770408 798848 858176 1059311 1071872 1098416 1148344 1279168 1323092 1473824 1540816 1578973 1597696 1716352 2118622 2196832 2296688 2558336 2646184 2947648 3081632 3157946 3432704 3638503 4237244 4393664 4593376 5116672 5292368 5895296 6163264 6315892 7277006 7607779 8474488 8787328 9186752 10584736 11790592 12326528 12631784 14554012 15215558 16948976 17574656 18373504 21169472 24653056 25263568 29108024 30431116 33897952 36747008 42338944 50527136 58216048 60862232 67795904 83685569 84677888 101054272 116432096 121724464 135591808 167371138 202108544 232864192 243448928 271183616 334742276 404217088 465728384 486897856 669484552 931456768 973795712 1338969104 1947591424 2677938208 5355876416 10711752832 21423505664
• Sum of all divisors σ(n): 50233442112
• Sum of proper divisors (its aliquot sum) s(n): 28809936448
• 21423505664 is an abundant number, because the sum of its proper divisors (28809936448) is greater than itself. Its abundance is 7386430784

Bases of 21423505664

• Binary: 10011111100111100001100000100000000₂
• Hexadecimal: 0x4FCF0C100
• Base-36: 9UB02RK

Squares and roots of 21423505664

• 21423505664 squared (21423505664²) is 458966594935440080896
• 21423505664 cubed (21423505664³) is 9832673446186194287408074194944
• The square root of 21423505664 is 146367.7070394969
• The cube root of 21423505664 is 2777.3472298063

Scales and comparisons

• 21,423,505,664 seconds is equal to 681 years, 10 weeks, 3 days, 5 hours, 47 minutes, 44 seconds.
• To count from 1 to 21,423,505,664 would take you about one thousand, three hundred sixty-two 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 21423505664 cubic inches would be around 231.4 feet tall.

Recreational maths with 21423505664

• 21423505664 backwards is 46650532412
• The number of decimal digits it has is: 11
• The sum of 21423505664's digits is 38
• More coming soon!