21263969664

Names of 21263969664

• Cardinal: 21263969664 can be written as Twenty-one billion, two hundred sixty-three million, nine hundred sixty-nine thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1263969664 × 10¹⁰

Factors of 21263969664

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 908

Divisors of 21263969664

• Number of divisors d(n): 384
• 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 64 72 81 84 96 108 112 126 127 128 144 162 168 189 192 216 224 243 252 254 288 324 336 378 381 384 432 448 486 504 508 567 576 648 672 756 762 769 864 889 896 972 1008 1016 1134 1143 1152 1296 1344 1512 1524 1538 1701 1728 1778 1944 2016 2032 2268 2286 2307 2592 2667 2688 3024 3048 3076 3402 3429 3456 3556 3888 4032 4064 4536 4572 4614 5184 5334 5383 6048 6096 6152 6804 6858 6921 7112 7776 8001 8064 8128 9072 9144 9228 10287 10368 10668 10766 12096 12192 12304 13608 13716 13842 14224 15552 16002 16149 16256 18144 18288 18456 20574 20763 21336 21532 24003 24192 24384 24608 27216 27432 27684 28448 30861 31104 32004 32298 36288 36576 36912 41148 41526 42672 43064 48006 48447 48768 49216 54432 54864 55368 56896 61722 62289 64008 64596 72009 72576 73152 73824 82296 83052 85344 86128 96012 96894 97663 98432 108864 109728 110736 113792 123444 124578 128016 129192 144018 145341 146304 147648 164592 166104 170688 172256 186867 192024 193788 195326 216027 217728 219456 221472 246888 249156 256032 258384 288036 290682 292989 295296 329184 332208 341376 344512 373734 384048 387576 390652 432054 436023 438912 442944 493776 498312 512064 516768 576072 581364 585978 658368 664416 683641 689024 747468 768096 775152 781304 864108 872046 878967 885888 987552 996624 1024128 1033536 1152144 1162728 1171956 1308069 1316736 1328832 1367282 1494936 1536192 1550304 1562608 1728216 1744092 1757934 1975104 1993248 2050923 2067072 2304288 2325456 2343912 2616138 2636901 2657664 2734564 2989872 3072384 3100608 3125216 3456432 3488184 3515868 3950208 3986496 4101846 4608576 4650912 4687824 5232276 5273802 5469128 5979744 6152769 6201216 6250432 6912864 6976368 7031736 7910703 7972992 8203692 9217152 9301824 9375648 10464552 10547604 10938256 11959488 12305538 12500864 13825728 13952736 14063472 15821406 16407384 18458307 18603648 18751296 20929104 21095208 21876512 23732109 23918976 24611076 27651456 27905472 28126944 31642812 32814768 36916614 37502592 41858208 42190416 43753024 47464218 49222152 55374921 55810944 56253888 63285624 65629536 73833228 83716416 84380832 87506048 94928436 98444304 110749842 112507776 126571248 131259072 147666456 166124763 167432832 168761664 189856872 196888608 221499684 253142496 262518144 295332912 332249526 337523328 379713744 393777216 442999368 506284992 590665824 664499052 759427488 787554432 885998736 1012569984 1181331648 1328998104 1518854976 1771997472 2362663296 2657996208 3037709952 3543994944 5315992416 7087989888 10631984832 21263969664
• Sum of all divisors σ(n): 73186713600
• Sum of proper divisors (its aliquot sum) s(n): 51922743936
• 21263969664 is an abundant number, because the sum of its proper divisors (51922743936) is greater than itself. Its abundance is 30658774272

Bases of 21263969664

• Binary: 10011110011011011100110110110000000₂
• Hexadecimal: 0x4F36E6D80
• Base-36: 9RO0O00

Squares and roots of 21263969664

• 21263969664 squared (21263969664²) is 452156405871512272896
• 21263969664 cubed (21263969664³) is 9614640097835108452664233426944
• The square root of 21263969664 is 145821.7050510657
• The cube root of 21263969664 is 2770.4359535749

Scales and comparisons

• 21,263,969,664 seconds is equal to 676 years, 6 weeks, 4 days, 18 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,263,969,664 would take you about one thousand, three hundred fifty-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 21263969664 cubic inches would be around 230.9 feet tall.

Recreational maths with 21263969664

• 21263969664 backwards is 46696936212
• 21263969664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21263969664's digits is 54
• More coming soon!