81409862424267520

Names of 81409862424267520

• Cardinal: 81409862424267520 can be written as Eighty-one quadrillion, four hundred nine trillion, eight hundred sixty-two billion, four hundred twenty-four million, two hundred sixty-seven thousand, five hundred twenty.

Scientific notation

• Scientific notation: 8.140986242426752 × 10¹⁶

Factors of 81409862424267520

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 11935

Divisors of 81409862424267520

• Number of divisors d(n): 1152
• Complete list of divisors:
  1 2 4 5 8 10 11 13 16 20 22 26 32 40 44 52 55 64 65 80 88 103 104 110 127 128 130 143 160 176 206 208 220 254 256 260 286 320 352 412 416 440 508 515 520 572 635 640 704 715 824 832 880 1016 1030 1040 1133 1144 1270 1280 1339 1397 1408 1430 1648 1651 1664 1760 2032 2060 2080 2266 2288 2540 2678 2794 2816 2860 3296 3302 3328 3520 4064 4120 4160 4532 4576 5080 5356 5573 5588 5665 5720 6101 6592 6604 6695 6985 7040 8128 8240 8255 8320 9064 9152 10160 10712 11146 11176 11330 11440 12202 13081 13184 13208 13390 13970 14080 14729 16256 16480 16510 16640 18128 18161 18304 20320 21424 22292 22352 22660 22880 24404 26162 26368 26416 26780 27865 27940 29458 30505 32512 32960 33020 36256 36322 36608 40640 42848 44584 44704 45320 45760 48808 52324 52832 53560 55730 55880 58916 61010 61303 65405 65920 66040 67111 72449 72512 72644 73645 79313 81280 85696 89168 89408 90640 90805 91520 97616 104648 105664 107120 111460 111760 117832 122020 122606 130810 131840 132080 134222 143891 144898 145024 145288 147290 158626 162560 170053 171392 178336 178816 181280 181610 183040 195232 209296 211328 214240 222920 223520 235664 244040 245212 261620 264160 268444 287782 289796 290048 290576 294580 306515 317252 335555 340106 342784 356672 357632 362245 362560 363220 390464 396565 418592 422656 428480 445840 447040 471328 488080 490424 523240 528320 536888 574019 575564 579592 581152 589160 613030 628403 634504 671110 680212 707771 713344 719455 724490 725120 726440 774827 780928 793130 796939 837184 850265 856960 872443 891680 894080 942656 976160 980848 1046480 1056640 1073776 1148038 1151128 1159184 1162304 1178320 1226060 1256806 1269008 1342220 1360424 1415542 1426688 1438910 1448980 1450240 1452880 1549654 1561856 1586260 1593878 1674368 1700530 1713920 1744886 1783360 1788160 1870583 1885312 1952320 1961696 2092960 2113280 2147552 2296076 2302256 2318368 2324608 2356640 2452120 2513612 2538016 2684440 2720848 2831084 2870095 2877820 2897960 2905760 3099308 3142015 3172520 3187756 3348736 3401060 3489772 3538855 3566720 3741166 3770624 3874135 3904640 3923392 3984695 4185920 4295104 4362215 4592152 4604512 4636736 4649216 4713280 4904240 5027224 5076032 5368880 5441696 5662168 5740190 5755640 5795920 5811520 6198616 6284030 6314209 6345040 6375512 6802120 6912433 6979544 7077710 7133440 7462247 7482332 7748270 7785481 7809280 7846784 7969390 8169239 8371840 8523097 8590208 8724430 9184304 9201023 9209024 9273472 9352915 9426560 9808480 10054448 10072751 10152064 10737760 10883392 11324336 11480380 11511280 11591840 11623040 12397232 12568060 12628418 12690080 12751024 13604240 13824866 13959088 14155420 14924494 14964664 15496540 15570962 15693568 15938780 16338478 16743680 17046194 17180416 17448860 18368608 18402046 18418048 18546944 18705830 18853120 19616960 20108896 20145502 20304128 21475520 21766784 22648672 22960760 23022560 23183680 23246080 24794464 25136120 25256836 25380160 25502048 27208480 27649732 27918176 28310840 29848988 29929328 30993080 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155587994848 165998936480 166796144944 172724434840 182108675788 182598830128 189996878324 192614945545 194484993560 205287563008 208495181180 224133754816 224541765292 224737021696 227635844735 228248537660 237496097905 239366145920 242612574464 256609453760 265598298368 276359095744 280167193520 280677206615 280921277120 282887263360 303265718080 308183912872 311175989696 331997872960 333592289888 345448869680 364217351576 365197660256 379993756648 385229891090 388969987120 416990362360 444765419713 448267509632 449083530584 455271689470 456497075320 474992195810 478732291840 500798858417 513218907520 552718191488 560334387040 561354413230 561842554240 565774526720 606531436160 616367825744 617489854553 622351979392 663995745920 667184579776 690897739360 728434703152 730395320512 759987513296 770459782180 777939974240 833980724720 889530839426 896535019264 898167061168 910543378940 912994150640 949984391620 1001597716834 1026437815040 1105436382976 1120668774080 1122708826460 1123685108480 1213062872320 1232735651488 1234979709106 1244703958784 1327991491840 1334369159552 1381795478720 1456869406304 1460790641024 1519975026592 1540919564360 1555879948480 1667961449440 1779061678852 1796334122336 1821086757880 1825988301280 1899968783240 2003195433668 2223827098565 2241337548160 2245417652920 2465471302976 2469959418212 2503994292085 2668738319104 2763590957440 2913738812608 2921581282048 3039950053184 3081839128720 3087449272765 3111759896960 3335922898880 3558123357704 3592668244672 3642173515760 3651976602560 3799937566480 4006390867336 4447654197130 4482675096320 4490835305840 4892419616843 4930942605952 4939918836424 5007988584170 5527181914880 5781950456269 5827477625216 6079900106368 6163678257440 6174898545530 6223519793920 6671845797760 7116246715408 7185336489344 7284347031520 7303953205120 7599875132960 8012781734672 8895308394260 8981670611680 9784839233686 9861885211904 9879837672848 10015977168340 11563900912538 11654955250432 12159800212736 12327356514880 12349797091060 13343691595520 14232493430816 14370672978688 14568694063040 14607906410240 15199750265920 16025563469344 17790616788520 17963341223360 19569678467372 19759675345696 20031954336680 23127801825076 24462098084215 24654713029760 24699594182120 28464986861632 28909752281345 29137388126080 30399500531840 32051126938688 35581233577040 35926682446720 39139356934744 39519350691392 40063908673360 46255603650152 48924196168430 49309426059520 49399188364240 56929973723264 57819504562690 58274776252160 60799001063680 63601455018959 64102253877376 71162467154080 71853364893440 78278713869488 79038701382784 80127817346720 92511207300304 97848392336860 98798376728480 113859947446528 115639009125380 127202910037918 128204507754752 142324934308160 156557427738976 158077402765568 160255634693440 185022414600608 195696784673720 197596753456960 231278018250760 254405820075836 284649868616320 313114855477952 318007275094795 320511269386880 370044829201216 391393569347440 395193506913920 462556036501520 508811640151672 569299737232640 626229710955904 636014550189590 641022538773760 740089658402432 782787138694880 790387013827840 925112073003040 1017623280303344 1252459421911808 1272029100379180 1480179316804864 1565574277389760 1850224146006080 2035246560606688 2544058200758360 3131148554779520 3700448292012160 4070493121213376 5088116401516720 6262297109559040 7400896584024320 8140986242426752 10176232803033440 16281972484853504 20352465606066880 40704931212133760 81409862424267520
• Sum of all divisors σ(n): 233218989276069888
• Sum of proper divisors (its aliquot sum) s(n): 151809126851802368
• 81409862424267520 is an abundant number, because the sum of its proper divisors (151809126851802368) is greater than itself. Its abundance is 70399264427534848

Bases of 81409862424267520

• Binary: 100100001001110011101011010101011000000110000101100000000₂
• Hexadecimal: 0x12139D6AB030B00
• Base-36: M9LDYHV1SSG

Squares and roots of 81409862424267520

• 81409862424267520 squared (81409862424267520²) is 6627565699938164688567408526950400
• 81409862424267520 cubed (81409862424267520³) is 539549211839760258979374991646722113400899371008000
• The square root of 81409862424267520 is 285324135.7198292119
• The cube root of 81409862424267520 is 433403.4262326835

Scales and comparisons

• 81,409,862,424,267,520 seconds is equal to 2,588,581,807 years, 44 weeks, 2 days, 15 hours, 38 minutes, 40 seconds.
• To count from 1 to 81,409,862,424,267,520 would take you about seven billion, seven hundred sixty-five million, seven hundred forty-five thousand, four 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 81409862424267520 cubic inches would be around 36117 feet tall.

Recreational maths with 81409862424267520

• 81409862424267520 backwards is 02576242426890418
• The number of decimal digits it has is: 17
• The sum of 81409862424267520's digits is 70
• More coming soon!