18681343445440

Names of 18681343445440

• Cardinal: 18681343445440 can be written as Eighteen trillion, six hundred eighty-one billion, three hundred forty-three million, four hundred forty-five thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.868134344544 × 10¹³

Factors of 18681343445440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 8625

Divisors of 18681343445440

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 130 160 169 181 208 233 260 320 338 362 416 466 520 676 724 832 845 905 932 1040 1165 1352 1448 1690 1810 1864 2080 2330 2353 2704 2896 3029 3380 3620 3728 4160 4660 4706 5408 5792 6058 6760 7240 7456 8191 9320 9412 10816 11584 11765 12116 13520 14480 14912 15145 16382 18640 18824 23530 24232 27040 28960 30290 30589 32764 37280 37648 39377 40955 42173 47060 48464 54080 57920 60580 61178 65528 74560 75296 78754 81910 84346 94120 96928 106483 121160 122356 131056 150592 152945 157508 163820 168692 188240 193856 196885 210865 212966 242320 244712 262112 305890 315016 327640 337384 376480 393770 421730 425932 484640 489424 524224 532415 548249 611780 630032 655280 674768 752960 787540 843460 851864 969280 978848 1064830 1096498 1223560 1260064 1310560 1349536 1384279 1482571 1575080 1686920 1703728 1908503 1957696 2129660 2192996 2447120 2520128 2621120 2699072 2741245 2768558 2965142 3150160 3373840 3407456 3817006 4259320 4385992 4894240 5482490 5537116 5930284 6300320 6747680 6814912 6921395 7127237 7412855 7634012 8518640 8771984 9542515 9788480 10964980 11074232 11860568 12600640 13495360 13842790 14254474 14825710 15268024 17037280 17543968 19085030 19273423 21929960 22148464 23721136 24810539 27685580 28508948 29651420 30536048 34074560 35087936 35636185 38170060 38546846 43859920 44296928 47442272 49621078 55371160 57017896 59302840 61072096 71272370 76340120 77093692 87719840 88593856 94884544 96367115 99242156 110742320 114035792 118605680 122144192 124052695 142544740 152680240 154187384 175439680 192734230 198484312 221484640 228071584 237211360 248105390 250554499 285089480 305360480 308374768 322537007 345439043 385468460 396968624 442969280 456143168 474422720 496210780 501108998 570178960 610720960 616749536 645074014 690878086 770936920 793937248 992421560 1002217996 1140357920 1233499072 1252772495 1290148028 1381756172 1541873840 1587874496 1612685035 1727195215 1984843120 2004435992 2280715840 2505544990 2580296056 2763512344 3083747680 3225370070 3454390430 3969686240 4008871984 4490707559 5011089980 5160592112 5527024688 6167495360 6450740140 6908780860 7939372480 8017743968 8981415118 10022179960 10321184224 11054049376 12901480280 13817561720 16035487936 17962830236 20044359920 20642368448 22108098752 22453537795 25802960560 27635123440 35925660472 40088719840 44907075590 51605921120 55270246880 58379198267 71851320944 80177439680 89814151180 103211842240 110540493760 116758396534 143702641888 179628302360 233516793068 287405283776 291895991335 359256604720 467033586136 583791982670 718513209440 934067172272 1167583965340 1437026418880 1868134344544 2335167930680 3736268689088 4670335861360 9340671722720 18681343445440
• Sum of all divisors σ(n): 48650045423616
• Sum of proper divisors (its aliquot sum) s(n): 29968701978176
• 18681343445440 is an abundant number, because the sum of its proper divisors (29968701978176) is greater than itself. Its abundance is 11287358532736

Bases of 18681343445440

• Binary: 100001111110110010110110101110000100111000000₂
• Hexadecimal: 0x10FD96D709C0
• Base-36: 6ME39JS1S

Squares and roots of 18681343445440

• 18681343445440 squared (18681343445440²) is 348992592926484050256793600
• 18681343445440 cubed (18681343445440³) is 6519650488374282920049454668190941184000
• The square root of 18681343445440 is 4322191.9723029425
• The cube root of 18681343445440 is 26533.9985816111

Scales and comparisons

• 18,681,343,445,440 seconds is equal to 594,008 years, 48 weeks, 4 days, 20 hours, 10 minutes, 40 seconds.
• To count from 1 to 18,681,343,445,440 would take you about one million, four hundred eighty-five thousand and twenty-two 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 18681343445440 cubic inches would be around 2211.2 feet tall.

Recreational maths with 18681343445440

• 18681343445440 backwards is 04454434318681
• The number of decimal digits it has is: 14
• The sum of 18681343445440's digits is 55
• More coming soon!