81126165120

Names of 81126165120

• Cardinal: 81126165120 can be written as Eighty-one billion, one hundred twenty-six million, one hundred sixty-five thousand, one hundred twenty.

Scientific notation

• Scientific notation: 8.112616512 × 10¹⁰

Factors of 81126165120

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 249

Divisors of 81126165120

• Number of divisors d(n): 1536
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 17 20 21 22 24 26 28 30 32 33 34 35 39 40 42 44 48 51 52 55 56 60 64 65 66 68 70 77 78 80 84 85 88 91 96 102 104 105 110 112 119 120 128 130 132 136 140 143 154 156 160 165 168 169 170 176 182 187 191 192 195 204 208 210 220 221 224 231 238 240 255 260 264 272 273 280 286 308 312 320 330 336 338 340 352 357 364 374 382 384 385 390 408 416 420 429 440 442 448 455 462 476 480 507 510 520 528 544 546 560 561 572 573 595 616 624 640 660 663 672 676 680 704 714 715 728 748 764 770 780 816 832 840 845 858 880 884 896 910 924 935 952 955 960 1001 1014 1020 1040 1056 1088 1092 1105 1120 1122 1144 1146 1155 1183 1190 1232 1248 1309 1320 1326 1337 1344 1352 1360 1365 1408 1428 1430 1456 1496 1528 1540 1547 1560 1632 1664 1680 1690 1716 1760 1768 1785 1820 1848 1859 1870 1904 1910 1920 2002 2028 2040 2080 2101 2112 2145 2176 2184 2210 2240 2244 2288 2292 2310 2366 2380 2431 2464 2483 2496 2535 2618 2640 2652 2674 2688 2704 2720 2730 2805 2856 2860 2865 2873 2912 2992 3003 3056 3080 3094 3120 3247 3264 3315 3360 3380 3432 3520 3536 3549 3570 3640 3696 3718 3740 3808 3820 3927 4004 4011 4056 4080 4160 4202 4224 4290 4368 4420 4480 4488 4576 4584 4620 4641 4732 4760 4862 4928 4966 4992 5005 5070 5236 5280 5304 5348 5408 5440 5460 5577 5610 5712 5720 5730 5746 5824 5915 5984 6006 6112 6160 6188 6240 6303 6494 6528 6545 6630 6685 6720 6760 6864 7040 7072 7098 7140 7280 7293 7392 7436 7449 7480 7616 7640 7735 7854 8008 8022 8112 8160 8320 8404 8580 8619 8736 8840 8976 9152 9168 9240 9282 9295 9464 9520 9724 9741 9856 9932 10010 10140 10472 10505 10560 10608 10696 10816 10880 10920 11154 11220 11424 11440 11460 11492 11648 11830 11968 12012 12155 12224 12320 12376 12415 12480 12606 12988 13013 13090 13260 13370 13440 13520 13728 14144 14196 14280 14365 14560 14586 14707 14784 14872 14898 14960 15015 15232 15280 15470 15708 16016 16044 16224 16235 16320 16808 17017 17160 17238 17381 17472 17680 17745 17952 18304 18336 18480 18564 18590 18928 19040 19448 19482 19635 19864 20020 20055 20111 20280 20944 21010 21120 21216 21392 21632 21840 22308 22440 22729 22848 22880 22920 22984 23205 23660 23936 24024 24310 24448 24640 24752 24830 24960 25212 25976 26026 26180 26520 26740 27040 27313 27456 27885 28288 28392 28560 28730 29120 29172 29414 29568 29744 29796 29920 30030 30560 30940 31416 31515 31603 32032 32088 32279 32448 32470 32640 33616 34034 34320 34476 34762 34944 35360 35490 35717 35904 36465 36672 36960 37128 37180 37245 37856 38080 38896 38964 39039 39270 39728 40040 40110 40222 40560 41888 42020 42211 42432 42784 43095 43680 44121 44616 44880 45458 45696 45760 45840 45968 46410 47320 48048 48620 48705 49280 49504 49660 50424 51051 51952 52052 52143 52360 53040 53480 54080 54626 54912 55770 56784 57120 57460 58240 58344 58828 59488 59592 59840 60060 60333 61120 61880 62832 63030 63206 64064 64176 64558 64896 64940 65065 67232 68068 68187 68640 68952 69524 70720 70980 71434 71808 72930 73344 73535 73920 74256 74360 74490 75712 76160 77792 77928 78078 78540 79456 80080 80220 80444 81120 81939 83776 84040 84422 84864 85085 85568 86190 86905 87360 88242 89232 89760 90916 91520 91680 91936 92820 94640 94809 96096 96837 97240 97410 99008 99320 100555 100848 102102 103904 104104 104286 104720 106080 106960 107151 108160 109252 111540 113568 113645 114240 114920 116688 117656 118976 119184 119680 120120 120666 122240 123760 125664 126060 126412 126633 128128 128352 129116 129880 130130 134464 136136 136374 136565 137280 137904 139048 141440 141960 142868 145860 147070 147840 148512 148720 148980 151424 155584 155856 156156 157080 158015 158912 160160 160440 160888 161395 162240 163878 167552 168080 168844 170170 171136 172380 173810 174720 176484 178464 178585 179520 181832 183360 183872 185640 189280 189618 191191 192192 193674 194480 194820 195195 198016 198640 201110 201696 204204 207808 208208 208572 209440 211055 212160 213920 214302 218504 220605 221221 223080 225953 227136 227290 228480 229840 233376 235312 237952 238368 240240 241332 247520 250019 251328 252120 252824 253266 255255 256704 258232 259760 260260 260715 268928 272272 272748 273130 274560 275808 278096 283920 285736 291720 294140 295477 297024 297440 297960 301665 311168 311712 312312 314160 316030 317824 320320 320880 321776 322790 324480 327756 336160 337688 340340 340935 344760 347620 352968 355069 356928 357170 359040 363664 366720 367744 371280 378560 379236 382382 384384 387348 388960 389640 390390 397280 402220 403392 408408 409695 415616 416416 417144 418880 422110 424320 427840 428604 437008 441210 442442 446160 451906 454272 454580 459680 464321 466752 470624 474045 476736 480480 482664 484185 495040 500038 502656 504240 505648 506532 510510 513408 516464 519520 520520 521430 535755 544544 545496 546260 548743 551616 556192 567840 571472 573573 583440 588280 590954 594048 594880 595920 603330 623424 624624 628320 632060 633165 640640 641760 643552 645580 655512 663663 672320 675376 677859 680680 681870 689520 695240 705936 710138 713856 714340 727328 742560 750057 757120 758472 764764 774696 777920 779280 780780 794560 804440 806784 816816 819390 832832 834288 837760 844220 855680 857208 874016 882420 884884 886431 892320 903812 909160 919360 928642 933504 941248 948090 953472 955955 960960 965328 968370 990080 1000076 1008480 1011296 1013064 1021020 1032928 1039040 1041040 1042860 1065207 1071510 1089088 1090992 1092520 1097486 1103232 1106105 1112384 1129765 1135680 1142944 1147146 1166880 1176560 1181908 1189760 1191840 1206660 1246848 1249248 1250095 1256640 1264120 1266330 1283520 1287104 1291160 1311024 1327326 1344640 1350752 1355718 1361360 1363740 1379040 1390480 1392963 1411872 1420276 1428680 1454656 1477385 1485120 1500114 1516944 1529528 1549392 1555840 1558560 1561560 1589120 1608880 1633632 1638780 1646229 1665664 1668576 1688440 1714416 1748032 1764840 1769768 1772862 1775345 1784640 1807624 1818320 1838720 1857284 1882496 1896180 1911910 1921920 1930656 1936740 2000152 2016960 2022592 2026128 2042040 2065856 2078080 2082080 2085720 2130414 2143020 2178176 2181984 2185040 2194972 2212210 2224768 2259530 2271360 2285888 2294292 2321605 2333760 2353120 2363816 2383680 2413320 2485483 2498496 2500190 2513280 2528240 2532660 2567040 2574208 2582320 2622048 2654652 2701504 2711436 2722720 2727480 2743715 2758080 2780960 2785926 2823744 2840552 2857360 2867865 2909312 2954770 2970240 3000228 3033888 3059056 3098784 3117120 3123120 3217760 3250247 3267264 3277560 3292458 3318315 3337152 3376880 3389295 3428832 3496064 3529680 3539536 3545724 3550690 3569280 3615248 3636640 3714568 3750285 3792360 3823820 3841201 3861312 3873480 4000304 4033920 4045184 4052256 4084080 4131712 4164160 4171440 4260828 4286040 4363968 4370080 4389944 4424420 4432155 4519060 4571776 4588584 4643210 4667520 4706240 4727632 4767360 4826640 4970966 4996992 5000380 5056480 5065320 5164640 5244096 5309304 5326035 5403008 5422872 5445440 5454960 5487430 5516160 5561920 5571852 5647488 5681104 5714720 5735730 5909540 6000456 6036173 6067776 6118112 6197568 6234240 6246240 6435520 6500494 6534528 6555120 6584916 6636630 6674304 6753760 6778590 6857664 6964815 7059360 7079072 7091448 7101380 7230496 7273280 7429136 7456449 7500570 7584720 7647640 7682402 7722624 7746960 8000608 8104512 8168160 8231145 8328320 8342880 8521656 8572080 8727936 8740160 8779888 8848840 8864310 9038120 9177168 9286420 9412480 9455264 9653280 9750741 9941932 10000760 10112960 10130640 10329280 10488192 10618608 10652070 10845744 10890880 10909920 10974860 11123840 11143704 11362208 11429440 11471460 11523603 11819080 12000912 12072346 12135552 12236224 12395136 12427415 12492480 12871040 13000988 13110240 13169832 13273260 13507520 13557180 13715328 13929630 14118720 14158144 14182896 14202760 14460992 14546560 14858272 14912898 15001140 15169440 15295280 15364804 15493920 16001216 16209024 16251235 16336320 16462290 16685760 17043312 17144160 17480320 17559776 17697680 17728620 18076240 18108519 18354336 18572840 18910528 19206005 19306560 19501482 19883864 20001520 20225920 20261280 20658560 21237216 21304140 21691488 21819840 21949720 22287408 22724416 22858880 22942920 23047206 23638160 24001824 24144692 24472448 24854830 24984960 26001976 26220480 26339664 26546520 27015040 27114360 27859260 28237440 28316288 28365792 28405520 28921984 29716544 29825796 30002280 30180865 30338880 30590560 30729608 30987840 32002432 32502470 32672640 32924580 33371520 34086624 34288320 35119552 35395360 35457240 36152480 36217038 36708672 37145680 37282245 37821056 38412010 38613120 39002964 39767728 40003040 40522560 42253211 42474432 42608280 43382976 43639680 43899440 44574816 45448832 45885840 46094412 47276320 48003648 48289384 48753705 49709660 52003952 52440960 52679328 53093040 54228720 55718520 56731584 56811040 57618015 59433088 59651592 60004560 60361730 60677760 61181120 61459216 61975680 65004940 65849160 68173248 68576640 70239104 70790720 70914480 72304960 72434076 73417344 74291360 74564490 76824020 78005928 79535456 80006080 81045120 84506422 84948864 85216560 86765952 87798880 89149632 90542595 91771680 92188824 94552640 96007296 96578768 97507410 99419320 104007904 105358656 106186080 108457440 111437040 113463168 113622080 115236030 119303184 120009120 120723460 122362240 122918432 126759633 130009880 131698320 136346496 141581440 141828960 144609920 144868152 148582720 149128980 153648040 156011856 159070912 160012160 169012844 170433120 175597760 178299264 181085190 183543360 184377648 189105280 193157536 195014820 198838640 208015808 210717312 211266055 212372160 216914880 222874080 227244160 230472060 238606368 240018240 241446920 245836864 253519266 260019760 263396640 283657920 289736304 297165440 298257960 307296080 312023712 318141824 338025688 340866240 351195520 362170380 367086720 368755296 386315072 390029640 397677280 416031616 422532110 424744320 433829760 445748160 460944120 477212736 480036480 482893840 491673728 507038532 520039520 526793280 567315840 579472608 596515920 614592160 624047424 633798165 676051376 681732480 724340760 737510592 772630144 780059280 795354560 845064220 891496320 921888240 954425472 965787680 1014077064 1040079040 1053586560 1158945216 1193031840 1229184320 1248094848 1267596330 1352102752 1448681520 1475021184 1560118560 1590709120 1690128440 1843776480 1931575360 2028154128 2080158080 2317890432 2386063680 2458368640 2535192660 2704205504 2897363040 3120237120 3380256880 3687552960 3863150720 4056308256 4772127360 5070385320 5408411008 5794726080 6240474240 6760513760 7375105920 8112616512 10140770640 11589452160 13521027520 16225233024 20281541280 27042055040 40563082560 81126165120
• Sum of all divisors σ(n): 371575848960
• Sum of proper divisors (its aliquot sum) s(n): 290449683840
• 81126165120 is an abundant number, because the sum of its proper divisors (290449683840) is greater than itself. Its abundance is 209323518720

Bases of 81126165120

• Binary: 1001011100011011111110000101010000000₂
• Hexadecimal: 0x12E37F0A80
• Base-36: 119OF9MO

Squares and roots of 81126165120

• 81126165120 squared (81126165120²) is 6581454667077504614400
• 81126165120 cubed (81126165120³) is 533928178051124267185376329728000
• The square root of 81126165120 is 284826.5526947937
• The cube root of 81126165120 is 4328.9939849677

Scales and comparisons

• 81,126,165,120 seconds is equal to 2,579 years, 29 weeks, 1 day, 5 hours, 52 minutes.
• To count from 1 to 81,126,165,120 would take you about five thousand, one hundred fifty-nine 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 81126165120 cubic inches would be around 360.7 feet tall.

Recreational maths with 81126165120

• 81126165120 backwards is 02156162118
• 81126165120 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81126165120's digits is 33
• More coming soon!