18668719938605568

Names of 18668719938605568

• Cardinal: 18668719938605568 can be written as Eighteen quadrillion, six hundred sixty-eight trillion, seven hundred nineteen billion, nine hundred thirty-eight million, six hundred five thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8668719938605568 × 10¹⁶

Factors of 18668719938605568

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 143959

Divisors of 18668719938605568

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 29 32 39 48 52 58 64 78 87 96 104 116 128 156 174 192 208 232 256 312 348 377 384 416 464 512 624 696 754 768 832 841 928 1131 1248 1392 1508 1536 1664 1682 1856 2262 2496 2523 2784 3016 3328 3364 3712 4524 4992 5046 5568 6032 6656 6728 7424 8191 9048 9984 10092 10933 11136 12064 13456 14848 16382 18096 19968 20184 21866 22272 24128 24573 26912 32764 32799 36192 40368 43732 44544 48256 49146 53824 65528 65598 72384 80736 87464 96512 98292 106483 107648 131056 131196 135721 144768 161472 174928 193024 196584 212966 215296 237539 262112 262392 271442 289536 319449 322944 349856 393168 407163 425932 430592 475078 524224 524784 542884 579072 638898 645888 699712 712617 786336 814326 851864 950156 1048448 1049568 1085768 1277796 1291776 1399424 1425234 1572672 1628652 1703728 1764373 1900312 2096896 2099136 2171536 2555592 2798848 2850468 3088007 3145344 3257304 3407456 3528746 3800624 3935909 4193792 4198272 4343072 5111184 5293119 5597696 5700936 6176014 6290688 6514608 6814912 6888631 7057492 7601248 7871818 8396544 8686144 9264021 10222368 10586238 11401872 11807727 12352028 12581376 13029216 13629824 13777262 14114984 15202496 15743636 16793088 17372288 18528042 20444736 20665893 21172476 22803744 23615454 24704056 26058432 27259648 27554524 28229968 30404992 31487272 34744576 37056084 40889472 41331786 42344952 45607488 47230908 49408112 51166817 52116864 54519296 55109048 56459936 60809984 62974544 69489152 74112168 81778944 82663572 84689904 89552203 91214976 94461816 98816224 102333634 104233728 110218096 112919872 114141361 121619968 125949088 148224336 153500451 163557888 165327144 169379808 179104406 182429952 188923632 197632448 204667268 208467456 220436192 225839744 228282722 251898176 268656609 296448672 307000902 330654288 338759616 342424083 358208812 364859904 377847264 395264896 409334536 440872384 451679488 456565444 503796352 537313218 592897344 614001804 661308576 677519232 684848166 716417624 755694528 790529792 818669072 881744768 903358976 913130888 1007592704 1074626436 1111690711 1185794688 1228003608 1322617152 1355038464 1369696332 1432835248 1483837693 1511389056 1581059584 1637338144 1763489536 1826261776 2015185408 2149252872 2223381422 2371589376 2456007216 2645234304 2710076928 2739392664 2865670496 2967675386 3022778112 3274676288 3335072133 3526979072 3652523552 4298505744 4446762844 4451513079 4743178752 4912014432 5290468608 5478785328 5731340992 5935350772 6045556224 6549352576 6670144266 7305047104 8597011488 8893525688 8903026158 9824028864 10580937216 10957570656 11462681984 11870701544 13098705152 13340288532 14451979243 14610094208 17194022976 17787051376 17806052316 19648057728 21915141312 22925363968 23741403088 26197410304 26680577064 28903958486 29220188416 32239030619 34388045952 35574102752 35612104632 39296115456 43355937729 43830282624 45850727936 47482806176 53361154128 57807916972 58440376832 64478061238 68776091904 71148205504 71224209264 78592230912 86711875458 87660565248 94965612352 96717091857 106722308256 115615833944 128956122476 137552183808 142296411008 142448418528 173423750916 175321130496 189931224704 193434183714 213444616512 231231667888 257912244952 284592822016 284896837056 346847501832 379862449408 386868367428 419107398047 426889233024 462463335776 515824489904 569185644032 569793674112 693695003664 759724898816 773736734856 838214796094 853778466048 924926671552 934931887951 1031648979808 1139587348224 1257322194141 1387390007328 1547473469712 1676429592188 1707556932096 1849853343104 1869863775902 2063297959616 2279174696448 2514644388282 2774780014656 2804795663853 3094946939424 3352859184376 3699706686208 3739727551804 4126595919232 5029288776564 5549560029312 5609591327706 6189893878848 6705718368752 7399413372416 7479455103608 8253191838464 10058577553128 11099120058624 11219182655412 12154114543363 12379787757696 13411436737504 14958910207216 16506383676928 20117155106256 22198240117248 22438365310824 24308229086726 24759575515392 26822873475008 29917820414432 36462343630089 40234310212512 44876730621648 48616458173452 49519151030784 53645746950016 59835640828864 72924687260178 80468620425024 89753461243296 97232916346904 107291493900032 119671281657728 145849374520356 160937240850048 179506922486592 194465832693808 214582987800064 239342563315456 291698749040712 321874481700096 359013844973184 388931665387616 478685126630912 583397498081424 643748963400192 718027689946368 777863330775232 1166794996162848 1436055379892736 1555726661550464 2333589992325696 3111453323100928 4667179984651392 6222906646201856 9334359969302784 18668719938605568
• Sum of all divisors σ(n): 55478155069489152
• Sum of proper divisors (its aliquot sum) s(n): 36809435130883584
• 18668719938605568 is an abundant number, because the sum of its proper divisors (36809435130883584) is greater than itself. Its abundance is 18140715192278016

Bases of 18668719938605568

• Binary: 1000010010100110001101000010100010110100001001000000000₂
• Hexadecimal: 0x42531A145A1200
• Base-36: 53TIBJJDPMO

Squares and roots of 18668719938605568

• 18668719938605568 squared (18668719938605568²) is 348521104146089082635196280602624
• 18668719938605568 cubed (18668719938605568³) is 6506442885996920949711357257822879865169281810432
• The square root of 18668719938605568 is 136633524.2120526143
• The cube root of 18668719938605568 is 265280.2064632901

Scales and comparisons

• 18,668,719,938,605,568 seconds is equal to 593,607,547 years, 47 weeks, 13 hours, 32 minutes, 48 seconds.
• To count from 1 to 18,668,719,938,605,568 would take you about one billion, seven hundred eighty million, eight hundred twenty-two thousand, six hundred forty-three 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 18668719938605568 cubic inches would be around 22106.7 feet tall.

Recreational maths with 18668719938605568

• 18668719938605568 backwards is 86550683991786681
• 18668719938605568 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 18668719938605568's digits is 96
• More coming soon!