81027812387025

Names of 81027812387025

• Cardinal: 81027812387025 can be written as Eighty-one trillion, twenty-seven billion, eight hundred twelve million, three hundred eighty-seven thousand and twenty-five.

Scientific notation

• Scientific notation: 8.1027812387025 × 10¹³

Factors of 81027812387025

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 383

Divisors of 81027812387025

• Number of divisors d(n): 405
• Complete list of divisors:
  1 3 5 7 9 15 21 25 35 37 45 49 63 75 105 111 147 175 185 225 245 259 315 331 333 343 441 525 555 735 777 925 993 1029 1225 1295 1369 1575 1655 1665 1715 1813 2205 2317 2331 2401 2775 2979 3087 3675 3885 4107 4965 5145 5439 6475 6845 6951 7203 8275 8325 8575 9065 9583 11025 11585 11655 12005 12247 12321 12691 14895 15435 16219 16317 19425 20535 20853 21609 24825 25725 27195 28749 34225 34755 36015 36741 38073 45325 47915 48657 57925 58275 60025 61235 61605 63455 67081 74475 77175 81095 81585 85729 86247 88837 102675 104265 108045 109561 110223 113533 114219 135975 143745 145971 173775 180075 183705 190365 201243 239575 243285 257187 266511 306175 308025 317275 328683 335405 340599 405475 407925 428645 431235 444185 453139 469567 521325 540225 547805 551115 567665 571095 600103 603729 718725 729855 766927 771561 794731 799533 918525 951825 986049 1006215 1021797 1216425 1285935 1332555 1359417 1408701 1643415 1677025 1702995 1800309 2143225 2156175 2220925 2265695 2300781 2347835 2384193 2739025 2755575 2838325 2855475 3000515 3018645 3171973 3286969 3649275 3834635 3857805 3973655 3997665 4053757 4078251 4200721 4226103 4930245 5031075 5108985 5368489 5400927 6429675 6662775 6797085 6902343 7043505 7152579 8217075 8514975 9001545 9515919 9860907 11328475 11503905 11739175 11920965 12161271 12602163 15002575 15093225 15859865 16105467 16434845 19173175 19289025 19868275 19988325 20268785 20391255 21003605 21130515 22203811 24651225 25544925 26842445 27004635 28376299 28547757 29405047 29582721 33985425 34511715 35217525 35762895 36483813 37579423 37806489 45007725 47579595 48316401 49304535 57519525 59604825 60806355 63010815 66611433 79299325 80527335 82174225 85128897 88215141 101343925 101956275 105018025 105652575 111019055 112738269 134212225 135023175 141881495 142738785 147025235 147913605 149989009 155426677 172558575 178814475 182419065 187897115 189032445 198634093 199834299 237897975 241582005 246522675 255386691 263055961 264645423 304031775 315054075 333057165 338214807 402636675 425644485 441075705 449967027 466280031 555095275 563691345 595902279 709407475 713693925 735126175 739568025 749945045 777133385 789167883 912095325 939485575 945162225 993170465 999171495 1049923063 1087986739 1207910025 1276933455 1315279805 1323227115 1349901081 1390438651 1398840093 1665285825 1691074035 1787706837 2128222425 2205378525 2249835135 2331400155 2367503649 2818456725 2979511395 3149769189 3263960217 3749725225 3885666925 3945839415 4171315953 4965852325 4995857475 5249615315 5439933695 6384667275 6576399025 6616135575 6749505405 6952193255 6994200465 7349461441 8455370175 8938534185 9449307567 9733070557 9791880651 11249175675 11657000775 11837518245 12513947859 14897556975 15748845945 16319801085 19729197075 20856579765 22048384323 26248076575 27199668475 29199211671 33747527025 34760966275 34971002325 36747307205 44692670925 47246537835 48665352785 48959403255 51446230087 59187591225 62569739295 66145152969 78744229725 81599005425 87597635013 104282898825 110241921615 145996058355 154338690261 183736536025 236232689175 243326763925 244797016275 257231150435 312848696475 330725764845 360123610609 437988175065 463016070783 551209608075 729980291775 771693451305 1080370831827 1286155752175 1653628824225 1800618053045 2189940875325 2315080353915 3241112495481 3858467256525 5401854159135 9003090265225 11575401769575 16205562477405 27009270795675 81027812387025
• Sum of all divisors σ(n): 174534900147153
• Sum of proper divisors (its aliquot sum) s(n): 93507087760128
• 81027812387025 is an abundant number, because the sum of its proper divisors (93507087760128) is greater than itself. Its abundance is 12479275373103

Bases of 81027812387025

• Binary: 10010011011000111000001111110010110100011010001₂
• Hexadecimal: 0x49B1C1F968D1
• Base-36: SPZNVF369

Squares and roots of 81027812387025

• 81027812387025 squared (81027812387025²) is 6565506380226922028388350625
• 81027812387025 cubed (81027812387025³) is 531988619202842662262234435469583900640625
• 81027812387025 is a perfect square number. Its square root is 9001545
• The cube root of 81027812387025 is 43272.4386910833

Scales and comparisons

• 81,027,812,387,025 seconds is equal to 2,576,433 years, 41 weeks, 3 days, 15 hours, 3 minutes, 45 seconds.
• To count from 1 to 81,027,812,387,025 would take you about six million, four hundred forty-one thousand and eighty-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 81027812387025 cubic inches would be around 3606 feet tall.

Recreational maths with 81027812387025

• 81027812387025 backwards is 52078321872018
• The number of decimal digits it has is: 14
• The sum of 81027812387025's digits is 54
• More coming soon!