21643771968

Names of 21643771968

• Cardinal: 21643771968 can be written as Twenty-one billion, six hundred forty-three million, seven hundred seventy-one thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1643771968 × 10¹⁰

Factors of 21643771968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 78

Divisors of 21643771968

• Number of divisors d(n): 672
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 27 28 32 36 39 42 48 49 52 53 54 56 63 64 72 78 84 91 96 98 104 106 108 112 117 126 144 147 156 159 168 182 189 192 196 208 212 216 224 234 252 273 288 294 312 318 336 343 351 364 371 378 392 416 424 432 441 448 468 477 504 546 576 588 624 636 637 672 686 689 702 728 742 756 784 819 832 848 864 882 936 954 1008 1029 1092 1113 1176 1248 1272 1274 1323 1344 1372 1378 1404 1431 1456 1484 1512 1568 1638 1696 1728 1764 1872 1908 1911 2016 2058 2067 2184 2226 2352 2457 2496 2544 2548 2597 2646 2744 2756 2808 2809 2862 2912 2968 3024 3087 3136 3276 3339 3392 3528 3744 3816 3822 4032 4116 4134 4368 4452 4459 4704 4823 4914 5088 5096 5194 5292 5488 5512 5616 5618 5724 5733 5824 5936 6048 6174 6201 6552 6678 7056 7488 7632 7644 7791 8232 8268 8427 8736 8904 8918 9261 9408 9646 9828 10017 10176 10192 10388 10584 10976 11024 11232 11236 11448 11466 11872 12096 12348 12402 13104 13356 13377 14112 14469 15264 15288 15582 16464 16536 16854 17199 17472 17808 17836 18179 18522 18603 19292 19656 19663 20034 20384 20776 21168 21952 22048 22464 22472 22896 22932 23373 23744 24696 24804 25281 26208 26712 26754 28224 28938 30528 30576 31164 32928 33072 33708 33761 34398 35616 35672 36358 36517 37044 37206 38584 39312 39326 40068 40131 40768 41552 42336 43407 44096 44944 45792 45864 46746 49392 49608 50562 52416 53424 53508 54537 57876 58989 61152 62328 65856 66144 67416 67522 68796 70119 71232 71344 72716 73034 74088 74412 75843 77168 78624 78652 80136 80262 83104 84672 86814 89888 91584 91728 93492 98784 99216 101124 101283 106848 107016 109074 109551 115752 117978 120393 122304 124656 130221 132288 134832 135044 137592 137641 140238 142688 145432 146068 148176 148824 151686 154336 157248 157304 160272 160524 163611 166208 173628 176967 179776 183456 186984 197568 198432 202248 202566 213696 214032 218148 219102 231504 235956 236327 240786 249312 255619 260442 269664 270088 275184 275282 280476 285376 290864 292136 296352 297648 303372 303849 308672 314608 320544 321048 327222 328653 347256 353934 366912 373968 396864 404496 405132 412923 428064 436296 438204 463008 471912 472654 481572 490833 498624 511238 520884 530901 539328 540176 550368 550564 560952 581728 584272 592704 595296 606744 607698 629216 641088 642096 654444 657306 694512 707868 708981 747936 766857 808992 810264 825846 856128 872592 876408 911547 926016 943824 945308 963144 963487 981666 985959 1022476 1041768 1061802 1080352 1100736 1101128 1121904 1163456 1168544 1190592 1213488 1215396 1238769 1258432 1284192 1308888 1314612 1389024 1415736 1417962 1495872 1533714 1617984 1620528 1651692 1745184 1752816 1789333 1823094 1887648 1890616 1926288 1926974 1963332 1971918 2044952 2083536 2123604 2126943 2160704 2202256 2243808 2300571 2337088 2426976 2430792 2477538 2568384 2617776 2629224 2778048 2831472 2835924 2890461 3067428 3241056 3303384 3490368 3505632 3578666 3646188 3716307 3775296 3781232 3852576 3853948 3926664 3943836 4089904 4167072 4247208 4253886 4404512 4487616 4601142 4853952 4861584 4955076 5235552 5258448 5367999 5662944 5671848 5780922 6134856 6380829 6482112 6606768 6901713 7011264 7157332 7292376 7432614 7562464 7705152 7707896 7853328 7887672 8179808 8334144 8494416 8507772 8671383 8809024 9202284 9723168 9910152 10471104 10516896 10735998 11325888 11343696 11561844 12269712 12525331 12761658 13213536 13803426 14314664 14584752 14865228 15124928 15415792 15706656 15775344 16103997 16359616 16988832 17015544 17342766 18404568 19446336 19820304 21033792 21471996 22687392 23123688 24539424 25050662 25523316 26014149 26427072 27606852 28629328 29169504 29730456 30831584 31413312 31550688 32207994 33977664 34031088 34685532 36809136 37575993 39640608 42943992 45374784 46247376 48311991 49078848 50101324 51046632 52028298 55213704 57258656 58339008 59460912 61663168 63101376 64415988 68062176 69371064 73618272 75151986 79281216 85887984 92494752 96623982 100202648 102093264 104056596 110427408 112727979 114517312 118921824 128831976 136124352 138742128 147236544 150303972 171775968 184989504 193247964 200405296 204186528 208113192 220854816 225455958 237843648 257663952 277484256 300607944 338183937 343551936 386495928 400810592 408373056 416226384 441709632 450911916 515327904 554968512 601215888 676367874 772991856 801621184 832452768 901823832 1030655808 1202431776 1352735748 1545983712 1664905536 1803647664 2404863552 2705471496 3091967424 3607295328 5410942992 7214590656 10821885984 21643771968
• Sum of all divisors σ(n): 81446624000
• Sum of proper divisors (its aliquot sum) s(n): 59802852032
• 21643771968 is an abundant number, because the sum of its proper divisors (59802852032) is greater than itself. Its abundance is 38159080064

Bases of 21643771968

• Binary: 10100001010000100011100000001000000₂
• Hexadecimal: 0x50A11C040
• Base-36: 9XY55C0

Squares and roots of 21643771968

• 21643771968 squared (21643771968²) is 468452865002782593024
• 21643771968 cubed (21643771968³) is 10139086987876514128891203551232
• The square root of 21643771968 is 147118.2244591063
• The cube root of 21643771968 is 2786.8332482345

Scales and comparisons

• 21,643,771,968 seconds is equal to 688 years, 10 weeks, 4 days, 14 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,643,771,968 would take you about one thousand, three hundred seventy-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 21643771968 cubic inches would be around 232.2 feet tall.

Recreational maths with 21643771968

• 21643771968 backwards is 86917734612
• 21643771968 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21643771968's digits is 54
• More coming soon!