21399655464

Names of 21399655464

• Cardinal: 21399655464 can be written as Twenty-one billion, three hundred ninety-nine million, six hundred fifty-five thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 2.1399655464 × 10¹⁰

Factors of 21399655464

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 505

Divisors of 21399655464

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 18 19 22 24 27 33 36 38 44 54 57 61 66 72 76 88 99 108 114 122 132 152 171 183 198 209 216 228 244 264 297 342 361 366 396 409 418 456 488 513 549 594 627 671 684 722 732 792 818 836 1026 1083 1098 1159 1188 1227 1254 1342 1368 1444 1464 1636 1647 1672 1881 2013 2052 2166 2196 2318 2376 2454 2508 2684 2888 3249 3272 3294 3477 3681 3762 3971 4026 4104 4332 4392 4499 4636 4908 5016 5368 5643 6039 6498 6588 6954 7362 7524 7771 7942 8052 8664 8998 9272 9747 9816 10431 11043 11286 11913 12078 12749 12996 13176 13497 13908 14724 15048 15542 15884 16104 17996 18117 19494 20862 22021 22086 22572 23313 23826 24156 24949 25498 25992 26994 27816 29448 31084 31293 31768 35739 35992 36234 38247 38988 40491 41724 44042 44172 45144 46626 47652 48312 49898 50996 53988 62168 62586 66063 69939 71478 72468 74847 76494 77976 80982 83448 85481 88084 88344 93252 95304 99796 101992 107217 107976 114741 121473 125172 132126 139878 142956 144936 147649 149694 152988 161964 170962 176168 186504 198189 199592 209817 214434 224541 229482 242231 242946 250344 256443 264252 274439 279756 285912 295298 299388 305976 323928 341924 344223 396378 419634 428868 442947 449082 458964 474031 484462 485892 512886 528504 548878 559512 590596 594567 598776 673623 683848 688446 726693 769329 792756 823317 839268 857736 885894 898164 917928 948062 968924 971784 1025772 1097756 1181192 1189134 1328841 1347246 1376892 1422093 1453386 1538658 1585512 1624139 1646634 1678536 1771788 1796328 1896124 1937848 2051544 2180079 2195512 2307987 2378268 2469951 2657682 2694492 2753784 2844186 2906772 3077316 3248278 3293268 3543576 3792248 3986523 4266279 4360158 4615974 4756536 4872417 4939902 5214341 5315364 5388984 5688372 5813544 6154632 6496556 6540237 6586536 7409853 7973046 8532558 8720316 9006589 9231948 9744834 9879804 10428682 10630728 11376744 12798837 12993112 13080474 14617251 14819706 15643023 15946092 17065116 17440632 18013178 18463896 19489668 19759608 20857364 25597674 26160948 27019767 29234502 29639412 31286046 31892184 34130232 36026356 38979336 41714728 43851753 46929069 51195348 52321896 54039534 58469004 59278824 62572092 72052712 81059301 87703506 93858138 99072479 102390696 108079068 116938008 125144184 140787207 162118602 175407012 187716276 198144958 216158136 243177903 281574414 297217437 324237204 350814024 375432552 396289916 486355806 563148828 594434874 648474408 792579832 891652311 972711612 1126297656 1188869748 1783304622 1945423224 2377739496 2674956933 3566609244 5349913866 7133218488 10699827732 21399655464
• Sum of all divisors σ(n): 69732144000
• Sum of proper divisors (its aliquot sum) s(n): 48332488536
• 21399655464 is an abundant number, because the sum of its proper divisors (48332488536) is greater than itself. Its abundance is 26932833072

Bases of 21399655464

• Binary: 10011111011100001001101010000101000₂
• Hexadecimal: 0x4FB84D428
• Base-36: 9TWSVU0

Squares and roots of 21399655464

• 21399655464 squared (21399655464²) is 457945253977905055296
• 21399655464 cubed (21399655464³) is 9799870656501143651838268537344
• The square root of 21399655464 is 146286.2107787333
• The cube root of 21399655464 is 2776.3161989951

Scales and comparisons

• 21,399,655,464 seconds is equal to 680 years, 23 weeks, 4 hours, 44 minutes, 24 seconds.
• To count from 1 to 21,399,655,464 would take you about one thousand, three hundred sixty 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 21399655464 cubic inches would be around 231.4 feet tall.

Recreational maths with 21399655464

• 21399655464 backwards is 46455699312
• 21399655464 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21399655464's digits is 54
• More coming soon!