81627533568

Names of 81627533568

• Cardinal: 81627533568 can be written as Eighty-one billion, six hundred twenty-seven million, five hundred thirty-three thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 8.1627533568 × 10¹⁰

Factors of 81627533568

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 512

Divisors of 81627533568

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 61 63 64 72 81 84 96 98 108 112 122 126 128 144 147 162 168 183 189 192 196 216 224 243 244 252 256 288 294 324 336 366 378 384 392 427 432 439 441 448 486 488 504 549 567 576 588 648 672 732 756 768 784 854 864 878 882 896 972 976 1008 1098 1134 1152 1176 1281 1296 1317 1323 1344 1464 1512 1568 1647 1701 1708 1728 1756 1764 1792 1944 1952 2016 2196 2268 2304 2352 2562 2592 2634 2646 2688 2928 2989 3024 3073 3136 3294 3402 3416 3456 3512 3528 3843 3888 3904 3951 3969 4032 4392 4536 4704 4941 5124 5184 5268 5292 5376 5856 5978 6048 6146 6272 6588 6804 6832 6912 7024 7056 7686 7776 7808 7902 7938 8064 8784 8967 9072 9219 9408 9882 10248 10368 10536 10584 11529 11712 11853 11907 11956 12096 12292 12544 13176 13608 13664 14048 14112 14823 15372 15552 15616 15804 15876 16128 17568 17934 18144 18438 18816 19764 20496 20736 21072 21168 21511 23058 23424 23706 23814 23912 24192 24584 26352 26779 26901 27216 27328 27657 28096 28224 29646 30744 31104 31608 31752 34587 35136 35559 35868 36288 36876 37632 39528 40992 42144 42336 43022 46116 46848 47412 47628 47824 48384 49168 52704 53558 53802 54432 54656 55314 56192 56448 59292 61488 62208 63216 63504 64533 69174 70272 71118 71736 72576 73752 79056 80337 80703 81984 82971 84288 84672 86044 92232 94824 95256 95648 98336 103761 105408 106677 107116 107604 108864 109312 110628 112384 112896 118584 122976 126432 127008 129066 138348 140544 142236 143472 145152 147504 158112 160674 161406 163968 165942 168576 169344 172088 184464 187453 189648 190512 191296 193599 196672 207522 210816 213354 214232 215208 217728 221256 237168 241011 242109 245952 248913 252864 254016 258132 276696 284472 286944 295008 316224 321348 322812 327936 331884 337152 338688 344176 368928 374906 379296 381024 382592 387198 393344 415044 421632 426708 428464 430416 435456 442512 474336 482022 484218 491904 497826 505728 508032 516264 553392 562359 568944 573888 580797 590016 632448 642696 645624 663768 688352 723033 726327 737856 746739 749812 758592 762048 765184 774396 786688 830088 853416 856928 860832 885024 948672 964044 968436 983808 995652 1011456 1016064 1032528 1106784 1124718 1137888 1147776 1161594 1180032 1264896 1285392 1291248 1312171 1327536 1376704 1446066 1452654 1475712 1493478 1499624 1517184 1524096 1548792 1660176 1687077 1706832 1713856 1721664 1742391 1770048 1897344 1928088 1936872 1991304 2065056 2169099 2213568 2249436 2275776 2295552 2323188 2360064 2570784 2582496 2624342 2655072 2753408 2892132 2905308 2951424 2986956 2999248 3034368 3048192 3097584 3320352 3374154 3413664 3427712 3443328 3484782 3540096 3794688 3856176 3873744 3936513 3982608 4130112 4338198 4427136 4498872 4551552 4646376 5061231 5141568 5164992 5227173 5248684 5310144 5506816 5784264 5810616 5973912 5998496 6195168 6507297 6640704 6748308 6827328 6855424 6886656 6969564 7080192 7712352 7747488 7873026 7965216 8260224 8676396 8854272 8997744 9103104 9292752 10122462 10283136 10329984 10454346 10497368 10620288 11568528 11621232 11809539 11947824 11996992 12390336 13014594 13281408 13496616 13654656 13939128 15183693 15424704 15494976 15746052 15930432 16520448 17352792 17995488 18585504 20244924 20566272 20659968 20908692 20994736 21240576 23137056 23242464 23619078 23895648 23993984 24780672 26029188 26562816 26993232 27309312 27878256 30367386 30849408 30989952 31492104 31860864 34705584 35428617 35990976 37171008 40489848 41817384 41989472 45551079 46274112 46484928 47238156 47791296 47987968 49561344 52058376 53986464 55756512 60734772 61698816 61979904 62984208 63721728 69411168 70857234 71981952 74342016 80979696 83634768 83978944 91102158 92548224 92969856 94476312 95582592 104116752 106285851 107972928 111513024 121469544 125968416 138822336 141714468 143963904 148684032 161959392 167269536 167957888 182204316 185096448 185939712 188952624 191165184 208233504 212571702 215945856 223026048 242939088 251936832 277644672 283428936 318857553 323918784 334539072 335915776 364408632 377905248 416467008 425143404 431891712 446052096 485878176 503873664 555289344 566857872 637715106 647837568 669078144 728817264 755810496 832934016 850286808 971756352 1007747328 1133715744 1275430212 1295675136 1338156288 1457634528 1511620992 1665868032 1700573616 1943512704 2267431488 2550860424 2915269056 3023241984 3401147232 3887025408 4534862976 5101720848 5830538112 6802294464 9069725952 10203441696 11661076224 13604588928 20406883392 27209177856 40813766784 81627533568
• Sum of all divisors σ(n): 289228779840
• Sum of proper divisors (its aliquot sum) s(n): 207601246272
• 81627533568 is an abundant number, because the sum of its proper divisors (207601246272) is greater than itself. Its abundance is 125973712704

Bases of 81627533568

• Binary: 1001100000001011000010101000100000000₂
• Hexadecimal: 0x1301615100
• Base-36: 11HYXC00

Squares and roots of 81627533568

• 81627533568 squared (81627533568²) is 6663054236394966810624
• 81627533568 cubed (81627533568³) is 543888683346734760640456459026432
• The square root of 81627533568 is 285705.3264606735
• The cube root of 81627533568 is 4337.8935598271

Scales and comparisons

• 81,627,533,568 seconds is equal to 2,595 years, 26 weeks, 1 day, 2 hours, 52 minutes, 48 seconds.
• To count from 1 to 81,627,533,568 would take you about five thousand, one hundred ninety-one 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 81627533568 cubic inches would be around 361.5 feet tall.

Recreational maths with 81627533568

• 81627533568 backwards is 86533572618
• 81627533568 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81627533568's digits is 54
• More coming soon!