21335978664

Names of 21335978664

• Cardinal: 21335978664 can be written as Twenty-one billion, three hundred thirty-five million, nine hundred seventy-eight thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1335978664 × 10¹⁰

Factors of 21335978664

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 200

Divisors of 21335978664

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 13 14 18 21 22 24 26 27 28 33 36 37 39 42 44 49 52 54 56 63 66 72 74 77 78 81 84 88 91 98 99 104 108 111 117 126 127 132 143 147 148 154 156 162 168 182 189 196 198 216 222 231 234 252 254 259 264 273 286 294 296 297 308 312 324 333 351 364 378 381 392 396 407 429 441 444 462 468 481 504 508 518 539 546 567 572 588 594 616 637 648 666 693 702 728 756 762 777 792 814 819 858 882 888 889 891 924 936 962 999 1001 1016 1036 1053 1078 1092 1134 1143 1144 1176 1188 1221 1274 1287 1323 1332 1386 1397 1404 1443 1512 1524 1554 1617 1628 1638 1651 1716 1764 1778 1782 1813 1848 1911 1924 1998 2002 2072 2079 2106 2156 2184 2268 2286 2331 2376 2442 2457 2548 2574 2646 2664 2667 2772 2794 2808 2849 2886 2997 3003 3048 3108 3234 3256 3276 3302 3367 3429 3432 3528 3556 3564 3626 3663 3822 3848 3861 3969 3996 4004 4158 4191 4212 4312 4329 4536 4572 4662 4699 4851 4884 4914 4953 5096 5148 5291 5292 5334 5439 5544 5588 5698 5733 5772 5994 6006 6216 6223 6237 6468 6552 6604 6734 6858 6993 7007 7112 7128 7252 7326 7371 7644 7722 7938 7992 8001 8008 8316 8382 8424 8547 8658 9009 9144 9324 9398 9702 9768 9779 9828 9906 10101 10287 10296 10582 10584 10668 10878 10989 11176 11396 11466 11544 11557 11583 11988 12012 12446 12474 12573 12936 12987 13208 13468 13716 13986 14014 14097 14504 14553 14652 14742 14859 15288 15444 15873 15876 16002 16317 16632 16764 17094 17199 17316 18018 18161 18648 18669 18796 19404 19558 19656 19812 19943 20202 20574 20979 21021 21164 21336 21756 21978 22792 22932 23114 23166 23569 23976 24003 24024 24892 24948 25146 25641 25974 26936 27027 27432 27972 28028 28194 29106 29304 29337 29484 29718 30303 30888 31746 31752 32004 32634 32893 32967 33528 34188 34398 34632 34671 36036 36322 37037 37338 37592 37719 38808 38961 39116 39624 39886 40404 41148 41958 42042 42291 42328 43512 43659 43956 44577 45864 46228 46332 47138 47619 48006 48951 49784 49896 50292 51282 51597 51689 51948 54054 54483 55944 56007 56056 56388 58212 58674 58968 59436 59829 60606 61087 63063 63492 64008 65268 65786 65934 68376 68453 68796 69342 70707 72009 72072 72644 74074 74676 75438 76923 77922 78232 79772 80808 80899 81081 82296 83916 84084 84582 87318 87912 88011 89154 90909 92456 92664 94276 95238 96012 97902 98679 100584 102564 103194 103378 103896 104013 108108 108966 111111 112014 112776 113157 116424 117348 118872 119658 121212 122174 126126 126873 126984 127127 130536 131572 131868 133731 136906 137592 138684 141414 142857 144018 145288 146853 148148 149352 150876 153846 155067 155844 159544 161798 162162 163449 167832 168021 168168 169164 174636 176022 178308 179487 181818 183261 188552 189189 190476 192024 195804 197358 205128 205359 206388 206756 208026 212121 216216 217932 222222 224028 226314 230251 230769 234696 239316 242424 242697 244348 252252 253746 254254 259259 263144 263736 264033 267462 272727 273812 277368 282828 285714 288036 293706 296037 296296 301752 307692 310134 311688 312039 323596 324324 326898 333333 336042 338328 349272 352044 356616 358974 361823 363636 366522 378378 380619 380952 381381 391608 394716 410718 412776 413512 416052 424242 427609 428571 435864 444444 448056 452628 460502 461538 465201 478632 485394 488696 490347 504063 504504 507492 508508 518518 528066 534924 538461 545454 547624 549783 565656 567567 571428 576072 587412 592074 615384 616077 620268 624078 636363 647192 648648 653796 666666 671957 672084 690753 704088 717948 723646 727272 728091 733044 756756 761238 762762 777777 789432 792099 821436 832104 848484 855218 857142 888111 888888 889889 905256 921004 923076 930402 936117 970788 980694 999999 1008126 1014984 1017016 1037036 1056132 1069848 1076922 1085469 1090908 1099566 1135134 1142856 1144143 1174824 1184148 1232154 1240536 1248156 1272726 1282827 1307592 1333332 1343914 1344168 1381506 1395603 1435896 1447292 1456182 1466088 1471041 1513512 1522476 1525524 1555554 1584198 1615383 1642872 1649349 1696968 1710436 1714284 1776222 1779778 1842008 1846152 1848231 1860804 1872234 1909089 1941576 1961388 1999998 2015871 2016252 2072259 2074072 2112264 2153844 2170938 2181816 2184273 2199132 2270268 2288286 2333331 2368296 2464308 2496312 2532761 2545452 2565654 2664333 2666664 2669667 2687828 2763012 2791206 2894584 2912364 2942082 2993263 2999997 3044952 3051048 3111108 3168396 3230766 3256407 3298698 3420872 3428568 3432429 3552444 3559556 3696462 3721608 3744468 3818178 3848481 3922776 3999996 4031742 4032504 4144518 4186809 4307688 4341876 4368546 4398264 4540536 4576572 4666662 4703699 4928616 4948047 5065522 5090904 5131308 5328666 5339334 5375656 5526024 5544693 5582412 5824728 5884164 5986526 5999994 6047613 6216777 6222216 6336792 6461532 6512814 6552819 6597396 6864858 6999993 7104888 7119112 7392924 7488936 7598283 7636356 7696962 7999992 8009001 8063484 8289036 8373618 8683752 8737092 8979789 9153144 9333324 9407398 9769221 9896094 10131044 10262616 10297287 10657332 10678668 11089386 11164824 11545443 11768328 11973052 11999988 12095226 12433554 12923064 13025628 13105638 13194792 13729716 13999986 14111097 14785848 15196566 15272712 15393924 16018002 16126968 16578072 16747236 17474184 17959578 18142839 18650331 18666648 18814796 19538442 19792188 20262088 20594574 20999979 21314664 21357336 22178772 22794849 23090886 23946104 23999976 24027003 24190452 24867108 26051256 26211276 26939367 27459432 27999972 28222194 29307663 30393132 30787848 32036004 32925893 33494472 34636329 35919156 36285678 37300662 37629592 39076884 39584376 41189148 41999958 42333291 44357544 45589698 46181772 48054006 48380904 49734216 52422552 53878734 54428517 55999944 56444388 58615326 60786264 64072008 65851786 68384547 69272658 71838312 72081009 72571356 74601324 78153768 80818101 82378296 83999916 84666582 91179396 92363544 96108012 98777679 107757468 108857034 112888776 117230652 126999873 131703572 136769094 138545316 144162018 145142712 149202648 161636202 167999832 169333164 182358792 192216024 197555358 205153641 215514936 217714068 234461304 242454303 253999746 263407144 273538188 277090632 288324036 296333037 323272404 338666328 380999619 395110716 410307282 435428136 484908606 507999492 547076376 576648072 592666074 646544808 761999238 790221432 820614564 888999111 969817212 1015998984 1185332148 1523998476 1641229128 1777998222 1939634424 2370664296 2666997333 3047996952 3555996444 5333994666 7111992888 10667989332 21335978664
• Sum of all divisors σ(n): 84538460160
• Sum of proper divisors (its aliquot sum) s(n): 63202481496
• 21335978664 is an abundant number, because the sum of its proper divisors (63202481496) is greater than itself. Its abundance is 41866502832

Bases of 21335978664

• Binary: 10011110111101110010011001010101000₂
• Hexadecimal: 0x4F7B932A8
• Base-36: 9SUW2I0

Squares and roots of 21335978664

• 21335978664 squared (21335978664²) is 455223985550663224896
• 21335978664 cubed (21335978664³) is 9712649243049994857430489618944
• The square root of 21335978664 is 146068.4040578249
• The cube root of 21335978664 is 2773.5597282795

Scales and comparisons

• 21,335,978,664 seconds is equal to 678 years, 21 weeks, 5 days, 4 hours, 44 minutes, 24 seconds.
• To count from 1 to 21,335,978,664 would take you about one thousand, three hundred fifty-six 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 21335978664 cubic inches would be around 231.1 feet tall.

Recreational maths with 21335978664

• 21335978664 backwards is 46687953312
• 21335978664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21335978664's digits is 54
• More coming soon!