21918999379968

Names of 21918999379968

• Cardinal: 21918999379968 can be written as Twenty-one trillion, nine hundred eighteen billion, nine hundred ninety-nine million, three hundred seventy-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1918999379968 × 10¹³

Factors of 21918999379968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 25
• Sum of prime factors: 114

Divisors of 21918999379968

• Number of divisors d(n): 912
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 17 18 24 31 32 34 36 48 51 61 62 64 68 72 93 96 102 122 124 128 136 144 153 183 186 192 204 244 248 256 272 279 288 289 306 366 372 384 408 488 496 512 527 544 549 558 576 578 612 732 744 768 816 867 976 992 1024 1037 1054 1088 1098 1116 1152 1156 1224 1464 1488 1536 1581 1632 1734 1891 1952 1984 2048 2074 2108 2176 2196 2232 2304 2312 2448 2601 2928 2976 3072 3111 3162 3264 3468 3782 3904 3968 4096 4148 4216 4352 4392 4464 4608 4624 4743 4896 4913 5202 5673 5856 5952 6144 6222 6324 6528 6936 7564 7808 7936 8192 8296 8432 8704 8784 8928 8959 9216 9248 9333 9486 9792 9826 10404 11346 11712 11904 12288 12444 12648 13056 13872 14739 15128 15616 15872 16384 16592 16864 17019 17408 17568 17629 17856 17918 18432 18496 18666 18972 19584 19652 20808 22692 23424 23808 24576 24888 25296 26112 26877 27744 29478 30256 31232 31744 32147 32768 33184 33728 34038 34816 35136 35258 35712 35836 36864 36992 37332 37944 39168 39304 41616 44217 45384 46848 47616 49152 49776 50592 52224 52887 53754 55488 58956 60512 62464 63488 64294 65536 66368 67456 68076 69632 70272 70516 71424 71672 73728 73984 74664 75888 78336 78608 80631 83232 88434 90768 93696 95232 96441 98304 99552 101184 104448 105774 107508 110976 117912 121024 124928 126976 128588 131072 132736 134912 136152 139264 140544 141032 142848 143344 147456 147968 149328 151776 152303 156672 157216 158661 161262 166464 176868 181536 187392 190464 192882 196608 199104 202368 208896 211548 215016 221952 235824 242048 249856 253952 257176 262144 265472 269824 272304 278528 281088 282064 285696 286688 289323 294912 295936 298656 299693 303552 304606 313344 314432 317322 322524 332928 353736 363072 374784 380928 385764 393216 398208 404736 417792 423096 430032 443904 456909 471648 484096 499712 507904 514352 530944 539648 544608 546499 557056 562176 564128 571392 573376 578646 589824 591872 597312 599386 607104 609212 626688 628864 634644 645048 665856 707472 726144 749568 761856 771528 786432 796416 809472 835584 846192 860064 887808 899079 913818 943296 968192 999424 1015808 1028704 1061888 1079296 1089216 1092998 1114112 1124352 1128256 1142784 1146752 1157292 1179648 1183744 1194624 1198772 1214208 1218424 1253376 1257728 1269288 1290096 1331712 1370727 1414944 1452288 1499136 1523712 1543056 1592832 1618944 1639497 1671168 1692384 1720128 1775616 1798158 1827636 1886592 1936384 1998848 2031616 2057408 2123776 2158592 2178432 2185996 2228224 2248704 2256512 2285568 2293504 2314584 2359296 2367488 2389248 2397544 2428416 2436848 2506752 2515456 2538576 2580192 2663424 2697237 2741454 2829888 2904576 2998272 3047424 3086112 3185664 3237888 3278994 3342336 3384768 3440256 3551232 3596316 3655272 3773184 3872768 3997696 4063232 4114816 4247552 4317184 4356864 4371992 4456448 4497408 4513024 4571136 4587008 4629168 4734976 4778496 4795088 4856832 4873696 4918491 5013504 5030912 5077152 5160384 5326848 5394474 5482908 5659776 5809152 5996544 6094848 6172224 6371328 6475776 6557988 6684672 6769536 6880512 7102464 7192632 7310544 7546368 7745536 7995392 8126464 8229632 8495104 8634368 8713728 8743984 8994816 9026048 9142272 9174016 9258336 9290483 9469952 9556992 9590176 9713664 9747392 9836982 10027008 10061824 10154304 10320768 10653696 10788948 10965816 11319552 11618304 11993088 12189696 12344448 12742656 12951552 13115976 13369344 13539072 13761024 14204928 14385264 14621088 15092736 15491072 15990784 16459264 16990208 17268736 17427456 17487968 17989632 18052096 18284544 18348032 18516672 18580966 18939904 19113984 19180352 19427328 19494784 19673964 20054016 20123648 20308608 20641536 21307392 21577896 21931632 22639104 23236608 23986176 24379392 24688896 25485312 25903104 26231952 27078144 27522048 27871449 28409856 28770528 29242176 30185472 30982144 32918528 33980416 34537472 34854912 34975936 35979264 36104192 36569088 36696064 37033344 37161932 37879808 38227968 38360704 38854656 38989568 39347928 40108032 40247296 40617216 41283072 42614784 43155792 43863264 45278208 46473216 47972352 49377792 50970624 51806208 52463904 54156288 55044096 55742898 56819712 57541056 58484352 60370944 61964288 65837056 67960832 69074944 69709824 69951872 71958528 72208384 73138176 73392128 74066688 74323864 75759616 76455936 76721408 77709312 77979136 78695856 80494592 81234432 82566144 83614347 85229568 86311584 87726528 90556416 92946432 98755584 101941248 103612416 104927808 108312576 110088192 111485796 113639424 115082112 116968704 120741888 123928576 131674112 135921664 138149888 139419648 139903744 143917056 144416768 146784256 148133376 148647728 152911872 153442816 155418624 155958272 157391712 160989184 162468864 165132288 167228694 170459136 172623168 175453056 181112832 185892864 197511168 203882496 207224832 209855616 216625152 220176384 222971592 227278848 230164224 233937408 241483776 247857152 263348224 271843328 278839296 279807488 288833536 293568512 296266752 297295456 305823744 306885632 310837248 311916544 314783424 321978368 324937728 330264576 334457388 340918272 345246336 350906112 362225664 371785728 395022336 407764992 414449664 419711232 433250304 440352768 445943184 460328448 467874816 482967552 495714304 526696448 557678592 559614976 577667072 587137024 592533504 594590912 611647488 613771264 621674496 623833088 629566848 643956736 649875456 660529152 668914776 681836544 690492672 701812224 724451328 743571456 790044672 815529984 839422464 866500608 880705536 891886368 920656896 935749632 965935104 1053392896 1115357184 1119229952 1155334144 1174274048 1185067008 1189181824 1223294976 1227542528 1243348992 1247666176 1259133696 1287913472 1299750912 1321058304 1337829552 1380985344 1403624448 1448902656 1487142912 1580089344 1678844928 1733001216 1761411072 1783772736 1841313792 1871499264 1931870208 2106785792 2230714368 2238459904 2310668288 2348548096 2370134016 2378363648 2446589952 2455085056 2495332352 2518267392 2599501824 2642116608 2675659104 2761970688 2807248896 2897805312 3160178688 3357689856 3466002432 3522822144 3567545472 3682627584 3742998528 3863740416 4213571584 4461428736 4476919808 4621336576 4740268032 4756727296 4910170112 4990664704 5036534784 5199003648 5284233216 5351318208 5523941376 5614497792 5795610624 6320357376 6715379712 6932004864 7045644288 7135090944 7365255168 7485997056 8427143168 8953839616 9480536064 9513454592 9820340224 9981329408 10073069568 10398007296 10568466432 10702636416 11047882752 11228995584 11591221248 12640714752 13430759424 13864009728 14270181888 14730510336 14971994112 17907679232 18961072128 19026909184 19640680448 19962658816 20146139136 20796014592 21136932864 21405272832 22095765504 22457991168 25281429504 26861518848 28540363776 29461020672 29943988224 35815358464 37922144256 38053818368 39281360896 39925317632 40292278272 41592029184 42810545664 44191531008 44915982336 53723037696 57080727552 58922041344 59887976448 71630716928 75844288512 76107636736 78562721792 80584556544 85621091328 88383062016 89831964672 107446075392 114161455104 117844082688 119775952896 143261433856 152215273472 161169113088 171242182656 176766124032 179663929344 214892150784 228322910208 235688165376 304430546944 322338226176 342484365312 353532248064 359327858688 429784301568 456645820416 608861093888 644676452352 684968730624 707064496128 913291640832 1217722187776 1289352904704 1369937461248 1826583281664 2435444375552 2739874922496 3653166563328 5479749844992 7306333126656 10959499689984 21918999379968
• Sum of all divisors σ(n): 70586981786880
• Sum of proper divisors (its aliquot sum) s(n): 48667982406912
• 21918999379968 is an abundant number, because the sum of its proper divisors (48667982406912) is greater than itself. Its abundance is 26748983026944

Bases of 21918999379968

• Binary: 100111110111101101010001011000000000000000000₂
• Hexadecimal: 0x13EF6A2C0000
• Base-36: 7RPG6ARK0

Squares and roots of 21918999379968

• 21918999379968 squared (21918999379968²) is 480442533819037568439681024
• 21918999379968 cubed (21918999379968³) is 10530819600889739333743866730263695327232
• The square root of 21918999379968 is 4681773.1021449555
• The cube root of 21918999379968 is 27985.9620873483

Scales and comparisons

• 21,918,999,379,968 seconds is equal to 696,956 years, 19 weeks, 5 days, 10 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,918,999,379,968 would take you about one million, seven hundred forty-two thousand, three hundred ninety 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 21918999379968 cubic inches would be around 2332.2 feet tall.

Recreational maths with 21918999379968

• 21918999379968 backwards is 86997399981912
• The number of decimal digits it has is: 14
• The sum of 21918999379968's digits is 90
• More coming soon!