81028690495488

Names of 81028690495488

• Cardinal: 81028690495488 can be written as Eighty-one trillion, twenty-eight billion, six hundred ninety million, four hundred ninety-five thousand, four hundred eighty-eight.

Scientific notation

• Scientific notation: 8.1028690495488 × 10¹³

Factors of 81028690495488

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 197

Divisors of 81028690495488

• Number of divisors d(n): 756
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 53 54 64 72 81 96 106 108 128 139 144 159 162 192 212 216 243 256 278 288 318 324 384 417 424 432 477 486 512 556 576 636 648 729 768 834 848 864 954 972 1024 1112 1152 1251 1272 1296 1431 1458 1536 1668 1696 1728 1908 1944 2048 2224 2304 2502 2544 2592 2809 2862 2916 3072 3336 3392 3456 3753 3816 3888 4293 4448 4608 5004 5088 5184 5618 5724 5832 6144 6672 6784 6912 7367 7506 7632 7776 8427 8586 8896 9216 10008 10176 10368 11236 11259 11448 11664 12879 13344 13568 13824 14734 15012 15264 15552 16854 17172 17792 18432 19321 20016 20352 20736 22101 22472 22518 22896 23328 25281 25758 26688 27136 27648 29468 30024 30528 31104 33708 33777 34344 35584 38637 38642 40032 40704 41472 44202 44944 45036 45792 46656 50562 51516 53376 54272 55296 57963 58936 60048 61056 62208 66303 67416 67554 68688 71168 75843 77274 77284 80064 81408 82944 88404 89888 90072 91584 93312 101124 101331 103032 106752 108544 115926 117872 120096 122112 124416 132606 134832 135108 137376 142336 151686 154548 154568 160128 162816 165888 173889 176808 179776 180144 183168 186624 198909 202248 202662 206064 213504 227529 231852 235744 240192 244224 248832 265212 269664 270216 274752 284672 303372 309096 309136 320256 325632 347778 353616 359552 360288 366336 373248 390451 397818 404496 405324 412128 427008 455058 463704 471488 480384 488448 497664 521667 530424 539328 540432 549504 596727 606744 618192 618272 640512 682587 695556 707232 719104 720576 732672 746496 780902 795636 808992 810648 824256 854016 910116 927408 942976 960768 976896 1024013 1043334 1060848 1078656 1080864 1099008 1171353 1193454 1213488 1236384 1236544 1281024 1365174 1391112 1414464 1438208 1441152 1465344 1492992 1561804 1565001 1591272 1617984 1621296 1648512 1790181 1820232 1854816 1885952 1921536 2047761 2048026 2086668 2121696 2157312 2161728 2198016 2342706 2386908 2426976 2472768 2473088 2562048 2730348 2782224 2828928 2876416 2882304 2930688 3072039 3123608 3130002 3182544 3235968 3242592 3297024 3514059 3580362 3640464 3709632 3771904 3843072 4095522 4096052 4173336 4243392 4314624 4323456 4396032 4685412 4695003 4773816 4853952 4945536 4946176 5370543 5460696 5564448 5657856 5752832 5764608 6144078 6247216 6260004 6365088 6471936 6485184 6594048 7028118 7160724 7280928 7419264 7543808 7686144 8191044 8192104 8346672 8486784 8629248 8646912 8792064 9216117 9370824 9390006 9547632 9707904 9891072 9892352 10542177 10741086 10921392 11128896 11315712 11529216 12288156 12494432 12520008 12730176 12943872 12970368 13188096 14056236 14085009 14321448 14561856 14838528 15087616 16382088 16384208 16693344 16973568 17258496 17293824 18432234 18741648 18780012 19095264 19415808 19782144 19784704 21084354 21482172 21842784 22257792 22631424 23058432 24576312 24988864 25040016 25460352 25887744 25940736 26376192 27648351 28112472 28170018 28642896 29123712 29677056 31626531 32764176 32768416 33386688 33947136 34587648 36864468 37483296 37560024 38190528 38831616 39564288 39569408 42168708 42964344 43685568 44515584 45262848 49152624 49977728 50080032 50920704 51775488 51881472 54272689 55296702 56224944 56340036 57285792 58247424 59354112 63253062 65528352 65536832 66773376 67894272 69175296 73728936 74966592 75120048 76381056 77663232 79128576 82945053 84337416 85928688 87371136 89031168 94879593 98305248 99955456 100160064 101841408 103762944 108545378 110593404 112449888 112680072 114571584 116494848 118708224 126506124 131056704 131073664 133546752 135788544 147457872 149933184 150240096 152762112 155326464 162818067 165890106 168674832 171857376 174742272 178062336 189759186 196610496 199910912 200320128 203682816 207525888 217090756 221186808 224899776 225360144 229143168 232989696 248835159 253012248 262113408 262147328 267093504 284638779 294915744 299866368 300480192 305524224 325636134 331780212 337349664 343714752 349484544 356124672 379518372 393220992 399821824 400640256 407365632 434181512 442373616 449799552 450720288 458286336 465979392 488454201 497670318 506024496 524226816 524294656 534187008 569277558 589831488 599732736 600960384 611048448 651272268 663560424 674699328 687429504 698969088 746505477 759036744 786441984 799643648 801280512 868363024 884747232 899599104 901440576 916572672 976908402 995340636 1012048992 1048453632 1048589312 1068374016 1138555116 1179662976 1199465472 1201920768 1222096896 1302544536 1327120848 1349398656 1374859008 1397938176 1465362603 1493010954 1518073488 1572883968 1602561024 1736726048 1769494464 1799198208 1802881152 1833145344 1953816804 1990681272 2024097984 2096907264 2097178624 2277110232 2359325952 2398930944 2403841536 2605089072 2654241696 2698797312 2749718016 2930725206 2986021908 3036146976 3145767936 3205122048 3473452096 3538988928 3598396416 3605762304 3666290688 3907633608 3981362544 4048195968 4193814528 4396087809 4554220464 4718651904 4807683072 5210178144 5308483392 5397594624 5499436032 5861450412 5972043816 6072293952 6291535872 6946904192 7077977856 7196792832 7211524608 7815267216 7962725088 8096391936 8792175618 9108440928 9437303808 9615366144 10420356288 10616966784 10795189248 10998872064 11722900824 11944087632 12144587904 13188263427 13893808384 14155955712 14423049216 15630534432 15925450176 16192783872 17584351236 18216881856 18874607616 20840712576 21233933568 21590378496 23445801648 23888175264 24289175808 26376526854 27787616768 28311911424 28846098432 31261068864 31850900352 32385567744 35168702472 36433763712 39564790281 41681425152 42467867136 46891603296 47776350528 48578351616 52753053708 55575233536 56623822848 62522137728 63701800704 64771135488 70337404944 72867527424 79129580562 83362850304 84935734272 93783206592 95552701056 97156703232 105506107416 111150467072 125044275456 127403601408 140674809888 145735054848 158259161124 166725700608 169871468544 187566413184 191105402112 194313406464 211012214832 250088550912 254807202816 281349619776 291470109696 316518322248 333451401216 375132826368 382210804224 422024429664 500177101824 509614405632 562699239552 582940219392 633036644496 750265652736 764421608448 844048859328 1000354203648 1125398479104 1266073288992 1500531305472 1528843216896 1688097718656 2250796958208 2532146577984 3001062610944 3376195437312 4501593916416 5064293155968 6752390874624 9003187832832 10128586311936 13504781749248 20257172623872 27009563498496 40514345247744 81028690495488
• Sum of all divisors σ(n): 249379395988905
• Sum of proper divisors (its aliquot sum) s(n): 168350705493417
• 81028690495488 is an abundant number, because the sum of its proper divisors (168350705493417) is greater than itself. Its abundance is 87322014997929

Bases of 81028690495488

• Binary: 10010011011000111110110010100000100100000000000₂
• Hexadecimal: 0x49B1F6504800
• Base-36: SQ02E8000

Squares and roots of 81028690495488

• 81028690495488 squared (81028690495488²) is 6565648683413587346948358144
• 81028690495488 cubed (81028690495488³) is 532005915070427845771032525423899440054272
• The square root of 81028690495488 is 9001593.7752982389
• The cube root of 81028690495488 is 43272.5950067823

Scales and comparisons

• 81,028,690,495,488 seconds is equal to 2,576,461 years, 37 weeks, 2 days, 22 hours, 4 minutes, 48 seconds.
• To count from 1 to 81,028,690,495,488 would take you about six million, four hundred forty-one thousand, one hundred fifty-four 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 81028690495488 cubic inches would be around 3606 feet tall.

Recreational maths with 81028690495488

• 81028690495488 backwards is 88459409682018
• 81028690495488 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81028690495488's digits is 72
• More coming soon!