81990663308820
81,990,663,308,820 is an even composite number composed of seven prime numbers multiplied together.
81990663308820 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of one thousand and eighty divisors.
Prime factorization of 81990663308820:
22 × 34 × 5 × 7 × 47 × 792 × 1572
(2 × 2 × 3 × 3 × 3 × 3 × 5 × 7 × 47 × 79 × 79 × 157 × 157)See below for interesting mathematical facts about the number 81990663308820 from the Numbermatics database.
Names of 81990663308820
- Cardinal: 81990663308820 can be written as Eighty-one trillion, nine hundred ninety billion, six hundred sixty-three million, three hundred eight thousand, eight hundred twenty.
Scientific notation
- Scientific notation: 8.199066330882 × 1013
Factors of 81990663308820
Divisors of 81990663308820
- Number of divisors d(n): 1080
-
Complete list of divisors:
1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 27 28 30 35 36 42 45 47 54 60 63 70 79 81 84 90 94 105 108 126 135 140 141 157 158 162 180 188 189 210 235 237 252 270 282 314 315 316 324 329 378 395 405 420 423 470 471 474 540 553 564 567 628 630 658 705 711 756 785 790 810 846 940 942 945 948 987 1099 1106 1134 1185 1260 1269 1316 1410 1413 1422 1570 1580 1620 1645 1659 1692 1884 1890 1974 2115 2133 2198 2212 2268 2355 2370 2538 2765 2820 2826 2835 2844 2961 3140 3290 3297 3318 3555 3713 3780 3807 3948 4230 4239 4266 4396 4710 4740 4935 4977 5076 5495 5530 5652 5670 5922 6241 6345 6399 6580 6594 6636 7065 7110 7379 7426 7614 8295 8460 8478 8532 8883 9420 9870 9891 9954 10665 10990 11060 11139 11340 11844 12403 12482 12690 12717 12798 13188 14130 14220 14758 14805 14852 14931 15228 16485 16590 16956 17766 18565 18723 19035 19740 19782 19908 21195 21330 21980 22137 22278 24649 24806 24885 24964 25380 25434 25596 25991 26649 28260 29516 29610 29673 29862 31205 31995 32970 33180 33417 35532 36895 37130 37209 37446 38070 39564 42390 42660 43687 44274 44415 44556 44793 49298 49455 49612 49770 50868 51653 51982 53298 55695 56169 59220 59346 59724 62015 62410 63585 63990 65940 66411 66834 73790 73947 74260 74418 74655 74892 76140 77973 84780 86821 87374 88548 88830 89019 89586 93615 98596 98910 99540 100251 103306 103964 106596 110685 111390 111627 112338 118692 123245 124030 124820 127170 127980 129955 131061 132822 133245 133668 147580 147894 148365 148836 149310 154959 155946 167085 168507 172543 173642 174748 177660 178038 179172 186045 187230 197820 199233 200502 206612 218435 221370 221841 222780 223254 223965 224676 233919 246490 248060 254340 258265 259910 260463 262122 265644 266490 280845 293327 295788 296730 298620 300753 309918 311892 332055 334170 334881 337014 345086 347284 356076 369735 372090 374460 389865 393183 398466 401004 434105 436870 442740 443682 445095 446508 447930 464877 467838 492980 501255 505521 516530 517629 519820 520926 524244 532980 558135 561690 582941 586654 593460 597699 601506 619836 655305 664110 665523 668340 669762 674028 690172 701757 739470 744180 774795 779730 781389 786366 796932 842535 862715 868210 873740 879981 887364 890190 895860 929754 935676 979837 996165 1002510 1004643 1011042 1033060 1035258 1041852 1109205 1116270 1123380 1158503 1165882 1169595 1173308 1179549 1195398 1203012 1302315 1310610 1328220 1331046 1339524 1394631 1403514 1466635 1478940 1503765 1549590 1552887 1559460 1562778 1572732 1674405 1685070 1725430 1736420 1748823 1759962 1780380 1859508 1947271 1959674 1965915 1992330 1996569 2005020 2009286 2022084 2053289 2070516 2105271 2218410 2232540 2317006 2324385 2331764 2339190 2344167 2359098 2390796 2527605 2588145 2604630 2621220 2639943 2662092 2789262 2807028 2914705 2933270 2939511 2988495 3007530 3099180 3105774 3125556 3327615 3348810 3370140 3450860 3475509 3497646 3508785 3519924 3538647 3894542 3906945 3919348 3931830 3984660 3993138 4018572 4080587 4106578 4183893 4210542 4399905 4436820 4634012 4648770 4658661 4678380 4688334 4718196 4899185 5023215 5055210 5176290 5209260 5246469 5279886 5578524 5792515 5829410 5841813 5866540 5879022 5897745 5976990 6015060 6159867 6211548 6655230 6697620 6858859 6951018 6973155 6995292 7017570 7032501 7077294 7764435 7789084 7813890 7863660 7919829 7986276 8109521 8161174 8213156 8367786 8421084 8744115 8799810 8818533 9297540 9317322 9376668 9736355 9798370 9982845 10046430 10110420 10266445 10352580 10426527 10492938 10526355 10559772 11585030 11658820 11683626 11720835 11758044 11795490 11953980 12241761 12319734 13199715 13310460 13630897 13717718 13902036 13946310 13975983 14035140 14065002 14154588 14697555 15528870 15627780 15739407 15839658 16219042 16322348 16735572 17377545 17488230 17525439 17599620 17637066 17693235 18479601 18634644 19472710 19596740 19965690 20092860 20402935 20532890 20576577 20853054 20919465 20985876 21052710 23170060 23293305 23367252 23441670 23590980 23759487 24328563 24483522 24639468 26232345 26399430 26455599 27261794 27435436 27892620 27951966 28130004 29209065 29395110 30799335 31057740 31279581 31478814 31679316 32438084 34294295 34755090 34976460 35050878 35162505 35274132 35386470 36725283 36959202 38945420 39599145 39931380 40547605 40805870 40892691 41065780 41153154 41706108 41838930 42105420 44092665 46052339 46586610 46883340 47218221 47518974 48657126 48967044 52132635 52464690 52576317 52798860 52911198 54523588 55438803 55903932 58418130 58790220 61208805 61598670 61729731 62559162 62957628 68154485 68588590 69510180 69879915 70101756 70325010 70772940 72985689 73450566 73918404 78697035 79198290 79366797 81095210 81611740 81785382 82306308 83677860 87627195 88185330 91521737 92104678 92398005 93173220 93838743 94436442 95037948 97314252 102882885 104265270 104929380 105152634 105822396 110175849 110877606 116836260 118797435 121642815 122417610 122678073 123197340 123459462 125118324 132277995 136308970 137177180 138157017 139759830 140650020 145971378 146901132 153834409 156397905 157394070 157728951 158396580 158733594 162190420 163570764 166316409 175254390 176370660 183043474 183626415 184209356 184796010 185189193 187677486 188872884 204463455 205765770 208530540 210305268 218957067 220351698 221755212 230261695 236091105 237594870 243285630 244835220 245356146 246918924 262881585 264555990 272617940 274565211 276314034 277194015 279519660 291942756 307668818 308648655 312795810 314788140 315457902 317467188 322366373 330527547 332632818 350508780 364928445 366086948 367252830 368034219 369592020 370378386 375354972 396833985 408926910 411531540 414471051 437914134 440703396 457608685 460523390 461503227 469193715 472182210 475189740 486571260 490712292 525763170 529111980 549130422 550879245 552628068 554388030 555567579 613390365 615337636 617297310 625591620 630915804 640652159 644732746 656871201 661055094 665265636 690785085 729856890 734505660 736068438 740756772 769172045 788644755 793667970 817853820 823695633 828942102 831582045 875828268 915217370 921046780 923006454 925945965 938387430 944364420 967099119 1051526340 1076840863 1094785335 1098260844 1101758490 1104102657 1108776060 1111135158 1226780730 1234594620 1243413153 1281304318 1289465492 1313742402 1322110188 1372826055 1381570170 1384509681 1459713780 1472136876 1538344090 1577289510 1587335940 1611831865 1647391266 1652637735 1657884204 1663164090 1830434740 1840171095 1846012908 1851891930 1876774860 1921956477 1934198238 2072355255 2153681726 2189570670 2203516980 2208205314 2222270316 2307516135 2453561460 2471086899 2486826306 2562608636 2627484804 2745652110 2763140340 2769019362 2777837895 2901297357 3076688180 3154579020 3203260795 3223663730 3230522589 3284356005 3294782532 3305275470 3326328180 3680342190 3703783860 3730239459 3843912954 3868396476 4118478165 4144710510 4153529043 4307363452 4379141340 4416410628 4615032270 4835495595 4942173798 4973652612 5384204315 5491304220 5520513285 5538038724 5555675790 5765869431 5802594714 6217065765 6406521590 6447327460 6461045178 6568712010 6610550940 6922548405 7230217223 7360684380 7413260697 7460478918 7687825908 8236956330 8289421020 8307058086 8703892071 9230064540 9609782385 9670991190 9691567767 9884347596 10768408630 11041026570 11111351580 11531738862 11605189428 12355434495 12434131530 12460587129 12813043180 12922090356 13137424020 13845096810 14460434446 14506486785 14826521394 14920957836 16152612945 16473912660 16614116172 17297608293 17407784142 18651197295 19219564770 19341982380 19383135534 20767645215 21536817260 21690651669 22082053140 23063477724 24710868990 24868263060 24921174258 26111676213 27690193620 28829347155 28920868892 29012973570 29074703301 29653042788 32305225890 34595216586 34815568284 36151086115 37066303485 37302394590 38439129540 38766271068 41535290430 43381303338 43519460355 48457838835 49421737980 49842348516 50611520561 51892824879 52223352426 57658694310 58025947140 58149406602 62302935645 64610451780 65071955007 69190433172 72302172230 74132606970 74604789180 83070580860 86488041465 86762606676 87038920710 87224109903 96915677670 101223041122 103785649758 104446704852 108453258345 115317388620 116298813204 124605871290 130143910014 130558381065 144604344460 145373516505 148265213940 151834561683 172976082930 174077841420 174448219806 193831355340 195215865021 202446082244 207571299516 216906516690 249211742580 253057602805 259464124395 260287820028 261116762130 290747033010 303669123366 325359775035 345952165860 348896439612 390431730042 433813033380 436120549515 455503685049 506115205610 518928248790 522233524260 581494066020 585647595063 607338246732 650719550070 759172808415 780863460084 872241099030 911007370098 976079325105 1012230411220 1037856497580 1171295190126 1301439100140 1366511055147 1518345616830 1744482198060 1822014740196 1952158650210 2277518425245 2342590380252 2733022110294 2928237975315 3036691233660 3904317300420 4099533165441 4555036850490 5466044220588 5856475950630 6832555275735 8199066330882 9110073700980 11712951901260 13665110551470 16398132661764 20497665827205 27330221102940 40995331654410 81990663308820
- Sum of all divisors σ(n): 306003167559936
- Sum of proper divisors (its aliquot sum) s(n): 224012504251116
- 81990663308820 is an abundant number, because the sum of its proper divisors (224012504251116) is greater than itself. Its abundance is 142021840942296
Bases of 81990663308820
- Binary: 100101010010001111100000101110010000110000101002
- Hexadecimal: 0x4A91F05C8614
- Base-36: T29ZNZX90
Squares and roots of 81990663308820
- 81990663308820 squared (819906633088202) is 6722468869820282190689792400
- 81990663308820 cubed (819906633088203) is 551179681709458464039648052337182888968000
-
The
square root of 81990663308820 is 9054869.5909339301 -
The
cube root of 81990663308820 is 43443.1658893285
Scales and comparisons
How big is 81990663308820?- 81,990,663,308,820 seconds is equal to 2,607,049 years, 24 weeks, 6 days, 12 hours, 27 minutes.
-
To count from 1 to 81,990,663,308,820 would take you about six million, five hundred seventeen thousand, six hundred twenty-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 81990663308820 cubic inches would be around 3620.3 feet tall.
Recreational maths with 81990663308820
- 81990663308820 backwards is 02880336609918
- 81990663308820 is a
Harshad number . - The number of decimal digits it has is: 14
- The sum of 81990663308820's digits is 63
- More coming soon!
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The information we have on file for 81990663308820 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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