81316713019666016

Names of 81316713019666016

• Cardinal: 81316713019666016 can be written as Eighty-one quadrillion, three hundred sixteen trillion, seven hundred thirteen billion, nineteen million, six hundred sixty-six thousand and sixteen.

Scientific notation

• Scientific notation: 8.1316713019666016 × 10¹⁶

Factors of 81316713019666016

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 5574

Divisors of 81316713019666016

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 8 16 31 32 62 124 127 248 254 257 467 496 508 514 934 992 1016 1028 1868 1997 2032 2056 2693 3736 3937 3994 4064 4112 5386 7472 7874 7967 7988 8224 10772 14477 14944 15748 15934 15976 21544 28954 31496 31868 31952 32639 43088 57908 59309 61907 62992 63736 63904 65278 83483 86176 115816 118618 120019 123814 125984 127472 130556 166966 231632 237236 240038 247628 253619 254944 261112 333932 342011 463264 474472 480076 495256 507238 513229 522224 667864 684022 692101 932599 948944 960152 990512 1011809 1014476 1026458 1044448 1257631 1335728 1368044 1384202 1838579 1865198 1897888 1920304 1981024 2023618 2028952 2052916 2515262 2671456 2736088 2768404 3677158 3720589 3730396 3840608 4047236 4057904 4105832 5030524 5377921 5472176 5536808 7354316 7441178 7460792 7862189 8094472 8115808 8211664 10061048 10602341 10755842 10944352 11073616 14708632 14882356 14921584 15242413 15724378 15910099 16188944 16423328 20122096 21204682 21455131 21511684 22147232 28910569 29417264 29764712 29843168 30484826 31448756 31820198 32377888 38986561 40244192 42409364 42910262 43023368 57821138 58834528 59529424 60969652 62897512 63640396 65180083 77973122 84818728 85820524 86046736 87896827 115642276 118440073 119058848 121939304 125795024 127280792 130360166 155946244 159719137 166715551 169637456 171641048 172093472 175793654 231284552 236880146 239677943 243878608 251590048 254561584 260720332 311892488 319438274 323211167 333431102 339274912 343282096 351587308 462569104 472514803 473760292 479355886 487757216 509123168 521440664 623784976 638876548 646422334 666862204 682995967 686564192 703174616 925138208 945029606 947520584 958711772 1042881328 1247569952 1277753096 1292844668 1333724408 1365991934 1382125697 1406349232 1890059212 1895041168 1917423544 2020582573 2085762656 2511489107 2555506192 2585689336 2667448816 2724801637 2731983868 2764251394 2812698464 3671642263 3780118424 3790082336 3834847088 4041165146 4951293247 5022978214 5111012384 5171378672 5334897632 5449603274 5463967736 5528502788 7343284526 7430016233 7560236848 7669694176 8082330292 9902586494 10019546177 10045956428 10342757344 10899206548 10927935472 11057005576 14686569052 14860032466 15120473696 16164660584 19805172988 20039092354 20091912856 21172874977 21798413096 21855870944 22114011152 29373138104 29720064932 30439098761 32329321168 39610345976 40078184708 40183825712 41047818209 42345749954 42845896607 43596826192 44228022304 58746276208 59440129864 60878197522 64658642336 77856162317 79220691952 80156369416 80367651424 82095636418 84691499908 85691793214 87193652384 117492552416 118880259728 121756395044 155712324634 158441383904 160312738832 164191272836 169382999816 171383586428 175529963519 237760519456 243512790088 311424649268 318959116589 320625477664 328382545672 338765999632 342767172856 351059927038 487025580176 622849298536 637918233178 645452700499 656765091344 677531999264 685534345712 702119854076 943612061591 974051160352 1245698597072 1272482364479 1275836466356 1290905400998 1313530182688 1371068691424 1404239708152 1887224123182 2491397194144 2544964728958 2551672932712 2581810801996 2808479416304 3774448246364 5089929457916 5103345865424 5163621603992 5441428869089 5616958832608 7548896492728 9887732614259 10179858915832 10206691730848 10327243207984 10882857738178 15097792985456 19775465228518 20009033715469 20359717831664 20654486415968 21765715476356 30195585970912 39550930457036 40018067430938 40719435663328 43531430952712 79101860914072 80036134861876 81972492963373 87062861905424 158203721828144 160072269723752 163944985926746 174125723810848 316407443656288 320144539447504 327889971853492 640289078895008 655779943706984 1311559887413968 2541147281864563 2623119774827936 5082294563729126 10164589127458252 20329178254916504 40658356509833008 81316713019666016
• Sum of all divisors σ(n): 167710066727583744
• Sum of proper divisors (its aliquot sum) s(n): 86393353707917728
• 81316713019666016 is an abundant number, because the sum of its proper divisors (86393353707917728) is greater than itself. Its abundance is 5076640688251712

Bases of 81316713019666016

• Binary: 100100000111001010001111010100001110101101110111001100000₂
• Hexadecimal: 0x120E51EA1D6EE60
• Base-36: M8ODA90LH7K

Squares and roots of 81316713019666016

• 81316713019666016 squared (81316713019666016²) is 6612407816322720558237568185312256
• 81316713019666016 cubed (81316713019666016³) is 537699268768911100927731801604796484267969791492096
• The square root of 81316713019666016 is 285160854.6411411217
• The cube root of 81316713019666016 is 433238.0626541159

Scales and comparisons

• 81,316,713,019,666,016 seconds is equal to 2,585,619,944 years, 47 weeks, 4 days, 20 hours, 6 minutes, 56 seconds.
• To count from 1 to 81,316,713,019,666,016 would take you about seven billion, seven hundred fifty-six million, eight hundred fifty-nine thousand, eight hundred thirty-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 81316713019666016 cubic inches would be around 36103.2 feet tall.

Recreational maths with 81316713019666016

• 81316713019666016 backwards is 61066691031761318
• The number of decimal digits it has is: 17
• The sum of 81316713019666016's digits is 65
• More coming soon!