18211557784046380

Names of 18211557784046380

• Cardinal: 18211557784046380 can be written as Eighteen quadrillion, two hundred eleven trillion, five hundred fifty-seven billion, seven hundred eighty-four million, forty-six thousand, three hundred eighty.

Scientific notation

• Scientific notation: 1.821155778404638 × 10¹⁶

Factors of 18211557784046380

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 518

Divisors of 18211557784046380

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 5 10 13 20 26 31 52 62 65 124 130 155 169 260 310 338 403 467 620 676 806 845 934 961 1612 1690 1868 1922 2015 2197 2335 3380 3844 4030 4394 4670 4805 5239 6071 8060 8788 9340 9610 10478 10985 12142 12493 14477 19220 20956 21970 24284 24986 26195 28954 29791 30355 43940 49972 52390 57908 59582 60710 62465 68107 72385 78923 104780 119164 121420 124930 136214 144770 148955 157846 162409 188201 249860 272428 289540 297910 315692 324818 340535 376402 387283 394615 448787 595820 649636 681070 752804 774566 789230 812045 897574 923521 941005 1025999 1362140 1549132 1578460 1624090 1795148 1847042 1882010 1936415 2051998 2111317 2243935 2446613 3248180 3694084 3764020 3872830 4103996 4222634 4487870 4617605 4893226 5034679 5129995 5834231 7745660 8445268 8975740 9235210 9786452 10069358 10259990 10556585 11668462 12005773 12233065 13912397 18470420 20138716 20519980 21113170 23336924 24011546 24466130 25173395 27824794 28629151 29171155 31805969 42226340 48023092 48932260 50346790 55649588 57258302 58342310 60028865 63611938 65450827 69561985 75845003 100693580 114516604 116684620 120057730 127223876 130901654 139123970 143145755 151690006 156075049 159029845 180861161 240115460 261803308 278247940 286291510 303380012 312150098 318059690 327254135 361722322 372178963 379225015 431284307 572583020 624300196 636119380 654508270 723444644 744357926 758450030 780375245 862568614 887503681 904305805 985985039 1309016540 1488715852 1516900060 1560750490 1725137228 1775007362 1808611610 1860894815 1971970078 2028975637 2156421535 2351195093 3121500980 3550014724 3617223220 3721789630 3943940156 4057951274 4312843070 4437518405 4702390186 4838326519 4929925195 5606695991 7443579260 8115902548 8625686140 8875036810 9404780372 9676653038 9859850390 10144878185 11213391982 11537547853 11755975465 13369813517 17750073620 19353306076 19719700780 20289756370 22426783964 23075095706 23511950930 24191632595 26739627034 28033479955 30565536209 40579512740 46150191412 47023901860 48383265190 53479254068 56066959910 57687739265 61131072418 62898244747 66849067585 72887047883 96766530380 112133919820 115375478530 122262144836 125796489494 133698135170 145774095766 149988122089 152827681045 173807575721 230750957060 251592978988 267396270340 291548191532 299976244178 305655362090 314491223735 347615151442 364435239415 414464219027 599952488356 611310724180 628982447470 695230302884 728870478830 749940610445 828928438054 869037878605 947531622479 1257964894940 1457740957660 1499881220890 1657856876108 1738075757210 1895063244958 1949845587157 2072321095135 2259498484373 2999762441780 3476151514420 3790126489916 3899691174314 4144642190270 4518996968746 4737658112395 5388034847351 7799382348628 8289284380540 9037993937492 9475316224790 9749227935785 10776069694702 11297492421865 18950632449580 19498455871570 21552139389404 22594984843730 26940174236755 29373480296849 38996911743140 45189969687460 53880348473510 58746960593698 70044453015563 107760696947020 117493921187396 140088906031126 146867401484245 280177812062252 293734802968490 350222265077815 587469605936980 700444530155630 910577889202319 1400889060311260 1821155778404638 3642311556809276 4552889446011595 9105778892023190 18211557784046380
• Sum of all divisors σ(n): 42902510140395360
• Sum of proper divisors (its aliquot sum) s(n): 24690952356348980
• 18211557784046380 is an abundant number, because the sum of its proper divisors (24690952356348980) is greater than itself. Its abundance is 6479394572302600

Bases of 18211557784046380

• Binary: 1000000101100110101000010111000100001100100101100101100₂
• Hexadecimal: 0x40B350B8864B2C
• Base-36: 4ZBGI5C4SVG

Squares and roots of 18211557784046380

• 18211557784046380 squared (18211557784046380²) is 331660836921660294756045991104400
• 18211557784046380 cubed (18211557784046380³) is 6040060496303999568784630354830115989717022072000
• The square root of 18211557784046380 is 134950204.8314354357
• The cube root of 18211557784046380 is 263096.8804797877

Scales and comparisons

• 18,211,557,784,046,380 seconds is equal to 579,071,205 years, 25 weeks, 1 day, 19 hours, 59 minutes, 40 seconds.
• To count from 1 to 18,211,557,784,046,380 would take you about one billion, seven hundred thirty-seven million, two hundred thirteen thousand, six hundred sixteen 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 18211557784046380 cubic inches would be around 21924.7 feet tall.

Recreational maths with 18211557784046380

• 18211557784046380 backwards is 08364048775511281
• The number of decimal digits it has is: 17
• The sum of 18211557784046380's digits is 70
• More coming soon!