81994679744940

Names of 81994679744940

• Cardinal: 81994679744940 can be written as Eighty-one trillion, nine hundred ninety-four billion, six hundred seventy-nine million, seven hundred forty-four thousand, nine hundred forty.

Scientific notation

• Scientific notation: 8.199467974494 × 10¹³

Factors of 81994679744940

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 30969

Divisors of 81994679744940

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 59 60 76 89 90 95 114 118 149 171 177 178 180 190 228 236 267 285 295 298 342 354 356 380 445 447 531 534 570 590 596 684 708 745 801 855 885 890 894 1062 1068 1121 1140 1180 1335 1341 1490 1602 1691 1710 1770 1780 1788 2124 2235 2242 2655 2670 2682 2831 2980 3204 3363 3382 3420 3540 4005 4470 4484 5073 5251 5310 5340 5364 5605 5662 6705 6726 6764 8010 8455 8493 8791 8940 10089 10146 10502 10620 11210 11324 13261 13410 13452 14155 15219 15753 16020 16815 16910 16986 17582 20178 20292 21004 22420 25365 25479 26255 26373 26522 26820 28310 30438 30643 31506 33630 33820 33972 35164 39783 40356 42465 43955 47259 50445 50730 50958 52510 52746 53044 56620 60876 61286 63012 66305 67260 76095 78765 79119 79566 84930 87910 91929 94518 99769 100890 101460 101916 105020 105492 119349 122572 127395 131865 132610 152190 153215 157530 158238 159132 167029 169860 175820 183858 189036 198915 199538 201780 236295 238698 251959 254790 263730 265220 275787 299307 304380 306430 315060 316476 334058 367716 395595 397830 399076 459645 472590 477396 498845 501087 503918 509580 527460 551574 582217 596745 598614 612860 668116 755877 782399 791190 795660 835145 897921 919290 945180 997690 1002174 1007836 1103148 1164434 1193490 1197228 1259795 1378935 1496535 1503261 1511754 1564798 1582380 1670290 1746651 1795842 1807937 1838580 1995380 2004348 2267631 2328868 2347197 2386980 2505435 2519590 2727227 2757870 2911085 2993070 3006522 3023508 3129596 3340580 3493302 3591684 3615874 3779385 3911995 4489605 4535262 4565807 4694394 5010870 5039180 5239953 5423811 5454454 5515740 5822170 5986140 6013044 6986604 7041591 7231748 7516305 7558770 7823990 8181681 8733255 8979210 9039685 9070524 9131614 9388788 10021740 10479906 10847622 10908908 11338155 11644340 11735985 13636135 13697421 14083182 14865581 15032610 15117540 15647980 16271433 16363362 17466510 17958420 18079370 18263228 20959812 21695244 22676310 22829035 23471970 24545043 26199765 27119055 27272270 27394842 28166364 29731162 30065220 32542866 32726724 34350803 34933020 35207955 36158740 40908405 41092263 44596743 45352620 45658070 46943940 49090086 51817313 52399530 54238110 54544540 54789684 59462324 65085732 68487105 68701606 70415910 74327905 81357165 81816810 82184526 86750333 89193486 91316140 98180172 103052409 103634626 104799060 108476220 122725215 133790229 136974210 137403212 140831820 148655810 155451939 160906393 162714330 163633620 164369052 171754015 173500666 178386972 205461315 206104818 207269252 222983715 245450430 259086565 260250999 267580458 269382613 273948420 297311620 309157227 310903878 321812786 325428660 343508030 347001332 406356823 410922630 412209636 433751665 445967430 466355817 482719179 490900860 515262045 518173130 520501998 535160916 538765226 618314454 621807756 643625572 668951145 687016060 777259695 780752997 804531965 808147839 812713646 821845260 867503330 891934860 932711634 965438358 1030524090 1036346260 1041003996 1077530452 1219070469 1236628908 1301254995 1337902290 1346913065 1448157537 1545786135 1554519390 1561505994 1609063930 1616295678 1625427292 1735006660 1865423268 1930876716 2031784115 2061048180 2331779085 2413595895 2424443517 2438140938 2602509990 2675804580 2693826130 2896315074 3057221467 3091572270 3109038780 3123011988 3218127860 3232591356 3657211407 3903764985 4040739195 4063568230 4663558170 4827191790 4848887034 4876281876 5118269647 5205019980 5387652260 5792630148 6095352345 6114442934 6183144540 7240787685 7314422814 7720779637 7807529970 8081478390 8127136460 9171664401 9327116340 9654383580 9697774068 10236539294 12122217585 12190704690 12228885868 14481575370 14628845628 15286107335 15354808941 15441559274 15615059940 16162956780 18286057035 18343328802 20473078588 23162338911 23975052557 24244435170 24381409380 25591348235 27514993203 28963150740 30572214670 30709617882 30883118548 36572114070 36686657604 38603898185 45858322005 46064426823 46324677822 47950105114 48488870340 51182696470 55029986406 61144429340 61419235764 69487016733 71925157671 73144228140 76774044705 77207796370 91716644010 92128853646 92649355644 95900210228 102365392940 110059972812 115811694555 119875262785 137574966015 138974033466 143850315342 153548089410 154415592740 183433288020 184257707292 215775473013 230322134115 231623389110 239750525570 275149932030 277948066932 287700630684 307096178820 347435083665 359625788355 431550946026 455525998583 460644268230 463246778220 479501051140 550299864060 694870167330 719251576710 863101892052 911051997166 921288536460 1078877365065 1366577995749 1389740334660 1438503153420 1822103994332 2157754730130 2277629992915 2733155991498 4099733987247 4315509460260 4555259985830 5466311982996 6832889978745 8199467974494 9110519971660 13665779957490 16398935948988 20498669936235 27331559914980 40997339872470 81994679744940
• Sum of all divisors σ(n): 271052308800000
• Sum of proper divisors (its aliquot sum) s(n): 189057629055060
• 81994679744940 is an abundant number, because the sum of its proper divisors (189057629055060) is greater than itself. Its abundance is 107062949310120

Bases of 81994679744940

• Binary: 10010101001001011011111110000100111100110101100₂
• Hexadecimal: 0x4A92DFC279AC
• Base-36: T2BU3A370

Squares and roots of 81994679744940

• 81994679744940 squared (81994679744940²) is 6723127506475273903455603600
• 81994679744940 cubed (81994679744940³) is 551260686777837109824609749573461745784000
• The square root of 81994679744940 is 9055091.3714296665
• The cube root of 81994679744940 is 43443.8752540475

Scales and comparisons

• 81,994,679,744,940 seconds is equal to 2,607,177 years, 9 weeks, 6 days, 1 hour, 9 minutes.
• To count from 1 to 81,994,679,744,940 would take you about six million, five hundred seventeen thousand, nine hundred forty-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 81994679744940 cubic inches would be around 3620.3 feet tall.

Recreational maths with 81994679744940

• 81994679744940 backwards is 04944797649918
• The number of decimal digits it has is: 14
• The sum of 81994679744940's digits is 81
• More coming soon!