18721162454836968

Names of 18721162454836968

• Cardinal: 18721162454836968 can be written as Eighteen quadrillion, seven hundred twenty-one trillion, one hundred sixty-two billion, four hundred fifty-four million, eight hundred thirty-six thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8721162454836968 × 10¹⁶

Factors of 18721162454836968

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 721

Divisors of 18721162454836968

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 49 54 56 63 72 84 98 108 126 147 168 189 196 216 252 294 343 378 392 441 504 588 686 709 756 882 1029 1176 1323 1372 1418 1512 1764 2058 2127 2646 2744 2836 3087 3528 4116 4254 4963 5292 5672 6174 6381 8232 8508 9261 9926 10584 12348 12762 14889 17016 18522 19143 19852 24696 25524 29778 34741 37044 38286 39704 44667 51048 59556 69482 74088 76572 89334 104223 119112 134001 138964 153144 178668 208446 243187 268002 277928 312669 357336 416892 486374 502681 536004 625338 729561 833784 938007 972748 1005362 1072008 1250676 1459122 1508043 1876014 1945496 2010724 2188683 2501352 2918244 3016086 3518767 3752028 4021448 4377366 4524129 5836488 6032172 6566049 7037534 7504056 8754732 9048258 10556301 12064344 13132098 13572387 14075068 17509464 18096516 21112602 24631369 26264196 27144774 28150136 31668903 36193032 42225204 49262738 52528392 54289548 63337806 73894107 84450408 95006709 98525476 108579096 126675612 147788214 172419583 190013418 197050952 221682321 253351224 295576428 344839166 356400829 380026836 443364642 517258749 591152856 665046963 689678332 712801658 760053672 886729284 1034517498 1069202487 1330093926 1379356664 1425603316 1551776247 1773458568 2069034996 2138404974 2494805803 2660187852 2851206632 3103552494 3207607461 4138069992 4276809948 4655328741 4989611606 5320375704 6207104988 6415214922 7484417409 8553619896 9310657482 9622822383 9979223212 12414209976 12830429844 14968834818 17463640621 18621314964 19245644766 19958446424 22453252227 25660859688 29937669636 34927281242 37242629928 38491289532 44906504454 52390921863 59875339272 67359756681 69854562484 76982579064 89813008908 104781843726 122245484347 134719513362 139709124968 157172765589 179626017816 209563687452 244490968694 252688187761 269439026724 314345531178 366736453041 419127374904 471518296767 488981937388 505376375522 538878053448 628691062356 733472906082 758064563283 943036593534 977963874776 1010752751044 1100209359123 1257382124712 1466945812164 1516129126566 1768817314327 1886073187068 2021505502088 2200418718246 2274193689849 2933891624328 3032258253132 3300628077369 3537634628654 3772146374136 4400837436492 4548387379698 5306451942981 6064516506264 6601256154738 6822581069547 7075269257308 8801674872984 9096774759396 10612903885962 12381721200289 13202512309476 13645162139094 14150538514616 15919355828943 18193549518792 21225807771924 24763442400578 26405024618952 27290324278188 31838711657886 37145163600867 42451615543848 47758067486829 49526884801156 54580648556376 63677423315772 74290327201734 86672048402023 95516134973658 99053769602312 111435490802601 127354846631544 148580654403468 173344096804046 191032269947316 222870981605202 260016145206069 297161308806936 334306472407803 346688193608092 382064539894632 445741963210404 520032290412138 668612944815606 693376387216184 780048435618207 891483926420808 1040064580824276 1337225889631212 1560096871236414 2080129161648552 2340145306854621 2674451779262424 3120193742472828 4680290613709242 6240387484945656 9360581227418484 18721162454836968
• Sum of all divisors σ(n): 60730822075440000
• Sum of proper divisors (its aliquot sum) s(n): 42009659620603032
• 18721162454836968 is an abundant number, because the sum of its proper divisors (42009659620603032) is greater than itself. Its abundance is 23288497165766064

Bases of 18721162454836968

• Binary: 1000010100000101100110001001101111001110010011011101000₂
• Hexadecimal: 0x4282CC4DE726E8
• Base-36: 54C3JAVIP60

Squares and roots of 18721162454836968

• 18721162454836968 squared (18721162454836968²) is 350481923660397329910299459433024
• 18721162454836968 cubed (18721162454836968³) is 6561429030330066894120744860254388554443635231232
• The square root of 18721162454836968 is 136825299.0306871867
• The cube root of 18721162454836968 is 265528.3747919229

Scales and comparisons

• 18,721,162,454,836,968 seconds is equal to 595,275,057 years, 36 weeks, 5 days, 1 hour, 22 minutes, 48 seconds.
• To count from 1 to 18,721,162,454,836,968 would take you about one billion, seven hundred eighty-five million, eight hundred twenty-five thousand, one hundred seventy-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 18721162454836968 cubic inches would be around 22127.4 feet tall.

Recreational maths with 18721162454836968

• 18721162454836968 backwards is 86963845426112781
• The number of decimal digits it has is: 17
• The sum of 18721162454836968's digits is 81
• More coming soon!