21721723968672

Names of 21721723968672

• Cardinal: 21721723968672 can be written as Twenty-one trillion, seven hundred twenty-one billion, seven hundred twenty-three million, nine hundred sixty-eight thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 2.1721723968672 × 10¹³

Factors of 21721723968672

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 4978

Divisors of 21721723968672

• Number of divisors d(n): 960
• 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 52 54 56 61 63 72 78 81 84 91 96 104 108 112 117 122 126 144 156 162 168 182 183 189 208 216 224 234 244 252 273 288 312 324 331 336 351 364 366 378 416 427 432 468 488 504 546 549 567 624 648 662 672 702 728 732 756 793 819 854 864 936 976 993 1008 1053 1092 1098 1134 1248 1281 1296 1324 1404 1456 1464 1512 1586 1638 1647 1708 1872 1952 1986 2016 2106 2184 2196 2268 2317 2379 2457 2562 2592 2648 2808 2912 2928 2979 3024 3172 3276 3294 3416 3744 3843 3972 4212 4303 4368 4392 4536 4561 4634 4758 4914 4941 5124 5296 5551 5616 5856 5958 6048 6344 6552 6588 6832 6951 7137 7371 7686 7944 8424 8606 8736 8784 8937 9072 9122 9268 9516 9828 9882 10248 10592 11102 11232 11529 11916 12688 12909 13104 13176 13664 13683 13902 14274 14742 15372 15888 16653 16848 17212 17568 17874 18144 18244 18536 19032 19656 19764 20191 20496 20853 21411 22204 23058 23832 25376 25818 26208 26352 26811 27366 27804 28548 29484 30121 30744 31776 31927 33306 33696 34424 34587 35748 36488 37072 38064 38727 39312 39528 40382 40992 41049 41706 42822 44408 46116 47664 49959 51636 52704 53622 54732 55608 57096 58968 59293 60242 60573 61488 62559 63854 64233 66612 68848 69174 71496 72976 74144 76128 77454 78624 79056 80764 82098 83412 85644 88816 90363 92232 95328 95781 99918 103272 107244 109464 111216 114192 116181 117936 118586 120484 121146 122976 123147 125118 127708 128466 133224 137696 138348 141337 142992 145952 149877 154908 158112 161528 164196 166824 171288 177632 177879 180726 181719 184464 187677 191562 199836 206544 214488 218928 222432 228384 232362 235872 237172 240968 242292 246294 250236 255416 256932 262483 266448 271089 276696 278221 282674 285984 287343 299754 309816 323056 328392 333648 342576 348543 355758 361452 363438 368928 369441 375354 383124 399672 413088 415051 424011 428976 437856 449631 464724 474344 481936 484584 492588 500472 510832 513864 524966 532896 533637 542178 545157 553392 556442 565348 574686 599508 619632 646112 656784 667296 685152 697086 711516 722904 726876 738882 750708 766248 787449 799344 813267 830102 834663 848022 857952 862029 899262 929448 948688 963872 969168 985176 1000944 1021664 1027728 1049932 1067274 1084356 1090314 1106784 1112884 1130696 1149372 1199016 1239264 1245153 1272033 1313568 1394172 1423032 1445808 1453752 1477764 1501416 1509691 1532496 1574898 1598688 1600911 1626534 1635471 1660204 1669326 1696044 1724058 1798524 1837381 1858896 1897376 1938336 1947547 1970352 2001888 2055456 2099864 2134548 2168712 2180628 2225768 2261392 2298744 2362347 2398032 2439801 2490306 2503989 2544066 2586087 2788344 2846064 2891616 2907504 2955528 3002832 3019382 3064992 3149796 3201822 3253068 3270942 3320408 3338652 3392088 3448116 3597048 3616873 3674762 3717792 3735459 3816099 3895094 3940704 4199728 4269096 4337424 4361256 4451536 4522784 4529073 4597488 4724694 4796064 4802733 4879602 4980612 5007978 5088132 5172174 5512143 5576688 5692128 5815008 5842641 5911056 6005664 6038764 6299592 6403644 6506136 6541884 6640816 6677304 6784176 6896232 7087041 7194096 7233746 7349524 7470918 7511967 7632198 7790188 8399456 8538192 8674848 8722512 8903072 9058146 9194976 9449388 9605466 9759204 9961224 10015956 10176264 10344348 10567837 10850619 11024286 11153376 11206377 11448297 11685282 11822112 12077528 12599184 12807288 13012272 13083768 13281632 13354608 13568352 13587219 13792464 14174082 14388192 14467492 14699048 14941836 15023934 15264396 15580376 16536429 17076384 17445024 17527923 18116292 18898776 19210932 19518408 19625983 19922448 20031912 20352528 20688696 21135674 21261123 21701238 22048572 22412754 22535901 22896594 23370564 24155056 25198368 25318111 25614576 26024544 26167536 26709216 27174438 27584928 28348164 28934984 29398096 29883672 30047868 30528792 31160752 31703511 32551857 33072858 33619131 35055846 36232584 37797552 38421864 39036816 39251966 39844896 40063824 40705056 40761657 41377392 42271348 42522246 43402476 44097144 44825508 45071802 45793188 46741128 48310112 49609287 50636222 51229152 52335072 52583769 54348876 56696328 57869968 58796192 58877949 59767344 60095736 61057584 62321504 63407022 65103714 66145716 67238262 70111692 72465168 75595104 75954333 76843728 78073632 78503932 80127648 81523314 82754784 84542696 85044492 86804952 88194288 89651016 90143604 91586376 92091151 93482256 95110533 97655571 99218574 101272444 105167538 108697752 113392656 115739936 117755898 119534688 120191472 122115168 122284971 126814044 130207428 132291432 134476524 137381881 140223384 144930336 148827861 151908666 153687456 157007864 157751307 163046628 169085392 170088984 173609904 176388576 176633847 179302032 180287208 183172752 184182302 186964512 190221066 195311142 198437148 202544888 210335076 217395504 226785312 227862999 235511796 240382944 244569942 253628088 260414856 264582864 268953048 274763762 276273453 280446768 285331599 292966713 297655722 303817332 314015728 315502614 326093256 338170784 340177968 347219808 353267694 358604064 360574416 366345504 368364604 380442132 390622284 396874296 405089776 412145643 420670152 434791008 455725998 471023592 489139884 507256176 520829712 529165728 529901541 537906096 549527524 552546906 560893536 570663198 585933426 595311444 607634664 628031456 631005228 644638057 652186512 680355936 683588997 706535388 721148832 736729208 760884264 781244568 793748592 810179552 824291286 828820359 841340304 855994797 911451996 942047184 978279768 1014512352 1041659424 1059803082 1075812192 1099055048 1105093812 1141326396 1171866852 1190622888 1197184963 1215269328 1236436929 1262010456 1289276114 1304373024 1367177994 1413070776 1473458416 1521768528 1562489136 1587497184 1589704623 1648582572 1657640718 1682680608 1711989594 1822903992 1884094368 1933914171 1956559536 2050766991 2119606164 2198110096 2210187624 2282652792 2343733704 2381245776 2394369926 2430538656 2472873858 2486461077 2524020912 2578552228 2734355988 2826141552 2946916832 3043537056 3124978272 3179409246 3297165144 3315281436 3423979188 3591554889 3645807984 3709310787 3867828342 3913119072 4101533982 4239212328 4396220192 4420375248 4565305584 4687467408 4762491552 4788739852 4945747716 4972922154 5048041824 5157104456 5468711976 5652283104 5801742513 6358818492 6594330288 6630562872 6847958376 7183109778 7291615968 7418621574 7459383231 7735656684 8203067964 8380294741 8478424656 8840750496 9130611168 9374934816 9577479704 9891495432 9945844308 10314208912 10774664667 10937423952 11127932361 11603485026 12717636984 13188660576 13261125744 13695916752 14366219556 14837243148 14918766462 15471313368 16406135928 16760589482 16956849312 17405227539 19154959408 19782990864 19891688616 20628417824 21549329334 21874847904 22255864722 23206970052 25140884223 25435273968 26522251488 27391833504 28732439112 29674486296 29837532924 30942626736 32323994001 32812271856 33521178964 34810455078 38309918816 39565981728 39783377232 43098658668 44511729444 46413940104 50281768446 50870547936 52215682617 57464878224 59348972592 59675065848 61885253472 64647988002 65624543712 67042357928 69620910156 75422652669 79566754464 86197317336 89023458888 92827880208 96971982003 100563536892 104431365234 114929756448 118697945184 119350131696 129295976004 134084715856 139241820312 150845305338 172394634672 178046917776 185655760416 193943964006 201127073784 208862730468 226267958007 238700263392 258591952008 268169431712 278483640624 301690610676 344789269344 356093835552 387887928012 402254147568 417725460936 452535916014 517183904016 556967281248 603381221352 678803874021 775775856024 804508295136 835450921872 905071832028 1034367808032 1206762442704 1357607748042 1551551712048 1670901843744 1810143664056 2413524885408 2715215496084 3103103424096 3620287328112 5430430992168 7240574656224 10860861984336 21721723968672
• Sum of all divisors σ(n): 80173159089408
• Sum of proper divisors (its aliquot sum) s(n): 58451435120736
• 21721723968672 is an abundant number, because the sum of its proper divisors (58451435120736) is greater than itself. Its abundance is 36729711152064

Bases of 21721723968672

• Binary: 100111100000101111011101001000001110010100000₂
• Hexadecimal: 0x13C17BA41CA0
• Base-36: 7P6TLM200

Squares and roots of 21721723968672

• 21721723968672 squared (21721723968672²) is 471833292171179662037443584
• 21721723968672 cubed (21721723968672³) is 10249032531772131996051910744909783400448
• The square root of 21721723968672 is 4660657.0318649279
• The cube root of 21721723968672 is 27901.7491692805

Scales and comparisons

• 21,721,723,968,672 seconds is equal to 690,683 years, 32 weeks, 6 days, 5 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,721,723,968,672 would take you about one million, seven hundred twenty-six thousand, seven hundred nine 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 21721723968672 cubic inches would be around 2325.1 feet tall.

Recreational maths with 21721723968672

• 21721723968672 backwards is 27686932712712
• 21721723968672 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21721723968672's digits is 63
• More coming soon!