21398380778832668

Names of 21398380778832668

• Cardinal: 21398380778832668 can be written as Twenty-one quadrillion, three hundred ninety-eight trillion, three hundred eighty billion, seven hundred seventy-eight million, eight hundred thirty-two thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1398380778832668 × 10¹⁶

Factors of 21398380778832668

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 192

Divisors of 21398380778832668

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 13 17 26 29 34 52 58 68 116 131 169 221 262 338 377 442 493 524 676 754 884 986 1508 1703 1972 2197 2227 2873 3406 3799 4394 4454 4901 5746 6409 6812 7598 8788 8908 9802 11492 12818 15196 17161 19604 22139 25636 28561 28951 34322 37349 44278 49387 57122 57902 63713 64583 68644 74698 83317 88556 98774 114244 115804 127426 129166 149396 166634 197548 223093 254852 258332 287807 291737 333268 371293 376363 446186 485537 497669 575614 583474 642031 742586 752726 828269 839579 892372 971074 995338 1083121 1151228 1166948 1284062 1485172 1505452 1656538 1679158 1942148 1990676 2166242 2248091 2568124 2900209 3313076 3358316 3741491 3792581 4332484 4496182 4826809 4892719 5800418 6311981 6469697 7482982 7585162 8346403 8460373 8992364 9653618 9785438 10767497 10914527 11600836 12623962 12939394 14080573 14965964 15170324 16692806 16920746 19307236 19570876 21534994 21829054 25247924 25878788 28161146 29225183 33385612 33841492 37702717 38217547 43069988 43658108 48639383 49303553 56322292 58450366 63605347 65194639 75405434 76435094 82055753 84106061 97278766 98607106 108503239 109984849 116900732 127210694 130389278 139977461 141888851 150810868 152870188 164111506 168212122 183047449 194557532 197214212 217006478 219969698 254421388 260778556 279954922 283777702 328223012 336424244 366094898 379927379 434012956 439939396 490135321 496828111 559909844 567555404 632311979 640946189 732189796 759854758 826869511 847530307 980270642 993656222 1093378793 1108308863 1264623958 1281892378 1410542107 1429803037 1519709516 1653739022 1695060614 1844555063 1960541284 1987312444 2186757586 2216617726 2379616837 2529247916 2563784756 2821084214 2859606074 3307478044 3390121228 3689110126 4373515172 4433235452 4759233674 4939055927 5642168428 5719212148 6371759173 6458765443 7378220252 8332300457 9518467348 9878111854 10749303643 11017893991 12743518346 12917530886 14213924309 14408015219 16664600914 18337047391 18587439481 19756223708 21498607286 22035787982 23979215819 25487036692 25835061772 28427848618 28816030438 33329201828 36674094782 37174878962 42997214572 44071575964 47958431638 56855697236 57632060876 64207727051 73348189564 74349757924 82832869249 83963950759 95916863276 108319905941 128415454102 143232621883 165665738498 167927901518 184781016017 187304197847 216639811882 241636713253 256830908204 286465243766 311729805647 331331476996 335855803036 369562032034 374608395694 433279623764 483273426506 572930487532 623459611294 739124064068 749216791388 834700451663 966546853012 1091531359867 1246919222588 1408158777233 1669400903326 1862024084479 2183062719734 2402153208221 2434954572011 2816317554466 3141277272289 3338801806652 3724048168958 4366125439468 4804306416442 4869909144022 5632635108932 6282554544578 7448096337916 9608612832884 9739818288044 10851105871619 12565109089156 14189907678271 21702211743238 24206313098227 28379815356542 31654409436143 40836604539757 43404423486476 48412626196454 56759630713084 63308818872286 81673209079514 96825252392908 126617637744572 163346418159028 184468799817523 314682070276951 368937599635046 411507322669859 629364140553902 737875199270092 823014645339718 1258728281107804 1646029290679436 5349595194708167 10699190389416334 21398380778832668
• Sum of all divisors σ(n): 44777087513595360
• Sum of proper divisors (its aliquot sum) s(n): 23378706734762692
• 21398380778832668 is an abundant number, because the sum of its proper divisors (23378706734762692) is greater than itself. Its abundance is 1980325955930024

Bases of 21398380778832668

• Binary: 1001100000001011011011011000101000101110100001100011100₂
• Hexadecimal: 0x4C05B6C517431C
• Base-36: 5UP3CF5WBH8

Squares and roots of 21398380778832668

• 21398380778832668 squared (21398380778832668²) is 457890699955915379136004743998224
• 21398380778832668 cubed (21398380778832668³) is 9798119552742896029649358308602826105913785181632
• The square root of 21398380778832668 is 146281853.8945711749
• The cube root of 21398380778832668 is 277626.1073507085

Scales and comparisons

• 21,398,380,778,832,668 seconds is equal to 680,402,319 years, 11 weeks, 6 days, 10 hours, 51 minutes, 8 seconds.
• To count from 1 to 21,398,380,778,832,668 would take you about two billion, forty-one million, two hundred six thousand, nine 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 21398380778832668 cubic inches would be around 23135.5 feet tall.

Recreational maths with 21398380778832668

• 21398380778832668 backwards is 86623887708389312
• The number of decimal digits it has is: 17
• The sum of 21398380778832668's digits is 89
• More coming soon!