21668813712

Names of 21668813712

• Cardinal: 21668813712 can be written as Twenty-one billion, six hundred sixty-eight million, eight hundred thirteen thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 2.1668813712 × 10¹⁰

Factors of 21668813712

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1632

Divisors of 21668813712

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 36 39 42 48 49 52 54 56 63 72 78 84 91 98 104 108 112 117 126 144 147 156 168 182 189 196 208 216 234 252 273 294 312 336 343 351 364 378 392 432 441 468 504 546 588 624 637 686 702 728 756 784 819 882 936 1008 1029 1092 1176 1274 1323 1372 1404 1456 1512 1607 1638 1764 1872 1911 2058 2184 2352 2401 2457 2548 2646 2744 2808 3024 3087 3214 3276 3528 3822 4116 4368 4459 4802 4821 4914 5096 5292 5488 5616 5733 6174 6428 6552 7056 7203 7644 8232 8918 9261 9604 9642 9828 10192 10584 11249 11466 12348 12856 13104 13377 14406 14463 15288 16464 17199 17836 18522 19208 19284 19656 20891 21168 21609 22498 22932 24696 25712 26754 28812 28926 30576 31213 33747 34398 35672 37044 38416 38568 39312 40131 41782 43218 43389 44996 45864 49392 53508 57624 57852 62426 62673 64827 67494 68796 71344 74088 77136 78743 80262 83564 86436 86778 89992 91728 93639 101241 107016 115248 115704 120393 124852 125346 129654 134988 137592 146237 148176 157486 160524 167128 172872 173556 179984 187278 188019 202482 214032 231408 236229 240786 249704 250692 259308 269976 275184 280917 292474 303723 314972 321048 334256 345744 347112 374556 376038 404964 438711 472458 481572 499408 501384 518616 539952 551201 561834 564057 584948 607446 629944 642096 694224 708687 749112 752076 809928 842751 877422 944916 963144 1002768 1023659 1037232 1102402 1123668 1128114 1169896 1214892 1259888 1316133 1417374 1498224 1504152 1619856 1653603 1685502 1754844 1889832 1926288 2047318 2126061 2204804 2247336 2256228 2339792 2429784 2632266 2834748 3008304 3070977 3307206 3371004 3509688 3779664 3858407 3948399 4094636 4252122 4409608 4494672 4512456 4859568 4960809 5264532 5669496 6141954 6614412 6742008 7019376 7165613 7716814 7896798 8189272 8504244 8819216 9024912 9212931 9921618 10529064 11338992 11575221 12283908 13228824 13484016 14331226 14882427 15433628 15793596 16378544 17008488 18425862 19843236 21058128 21496839 23150442 24567816 26457648 27638793 28662452 29764854 30867256 31587192 34016976 34725663 36851724 39686472 42993678 46300884 49135632 50159291 55277586 57324904 59529708 61734512 63174384 64490517 69451326 73703448 79372944 85987356 92601768 100318582 104176989 110555172 114649808 119059416 128981034 138902652 147406896 150477873 171974712 185203536 193471551 200637164 208353978 221110344 238118832 257962068 277805304 300955746 343949424 386943102 401274328 416707956 442220688 451433619 515924136 555610608 601911492 773886204 802548656 833415912 902867238 1031848272 1203822984 1354300857 1547772408 1666831824 1805734476 2407645968 2708601714 3095544816 3611468952 5417203428 7222937904 10834406856 21668813712
• Sum of all divisors σ(n): 78189578880
• Sum of proper divisors (its aliquot sum) s(n): 56520765168
• 21668813712 is an abundant number, because the sum of its proper divisors (56520765168) is greater than itself. Its abundance is 34851951456

Bases of 21668813712

• Binary: 10100001011100011111101101110010000₂
• Hexadecimal: 0x50B8FDB90
• Base-36: 9YD1VO0

Squares and roots of 21668813712

• 21668813712 squared (21668813712²) is 469537487685359218944
• 21668813712 cubed (21668813712³) is 10174320351454542985099357360128
• The square root of 21668813712 is 147203.3074084955
• The cube root of 21668813712 is 2787.9076183841

Scales and comparisons

• 21,668,813,712 seconds is equal to 689 years, 10 hours, 55 minutes, 12 seconds.
• To count from 1 to 21,668,813,712 would take you about one thousand, three hundred seventy-eight 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 21668813712 cubic inches would be around 232.3 feet tall.

Recreational maths with 21668813712

• 21668813712 backwards is 21731886612
• The number of decimal digits it has is: 11
• The sum of 21668813712's digits is 45
• More coming soon!