81360764121
81,360,764,121 is an odd composite number composed of eight prime numbers multiplied together.
81360764121 is an odd composite number. It is composed of eight distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 81360764121:
3 × 7 × 13 × 23 × 41 × 53 × 67 × 89
See below for interesting mathematical facts about the number 81360764121 from the Numbermatics database.
Names of 81360764121
- Cardinal: 81360764121 can be written as Eighty-one billion, three hundred sixty million, seven hundred sixty-four thousand, one hundred twenty-one.
Scientific notation
- Scientific notation: 8.1360764121 × 1010
Factors of 81360764121
Divisors of 81360764121
- Number of divisors d(n): 256
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Complete list of divisors:
1 3 7 13 21 23 39 41 53 67 69 89 91 123 159 161 201 267 273 287 299 371 469 483 533 623 689 861 871 897 943 1113 1157 1219 1407 1541 1599 1869 2047 2067 2093 2173 2613 2747 2829 3471 3551 3649 3657 3731 4623 4717 4823 5963 6097 6141 6279 6519 6601 8099 8241 8533 10653 10787 10947 11193 12259 14151 14329 14469 15211 15847 17889 18291 19229 19803 20033 24297 24857 25543 25599 26611 28249 32361 33019 35711 36777 41741 42987 45633 46163 47437 47541 49979 57687 60099 61321 63181 74571 76629 77519 79833 81673 83927 84747 85813 99057 107133 108491 110929 125223 137149 138489 140231 142311 145591 149937 183963 186277 189543 193397 197743 232557 244483 245019 249977 251781 257439 316039 323141 325473 332059 332787 349853 411447 420693 429247 436773 442267 542633 558831 571711 580191 587489 593229 649727 733449 749931 759437 821353 948117 960043 969423 996177 1019137 1049559 1061749 1091051 1287741 1326801 1353779 1410383 1627899 1711381 1715133 1762467 1782937 1892683 1949181 2212273 2278311 2464059 2514161 2880129 3057411 3178279 3185247 3273153 3348593 4061337 4108507 4231149 4448131 4548089 5134143 5348811 5623109 5678049 5749471 6636819 7268897 7432243 7542483 7637357 9534837 9872681 10045779 12325521 12480559 12957599 13248781 13344393 13644267 16869327 17248413 17599127 21806691 22247953 22296729 22912071 23440151 28759549 29618043 31136917 37441677 38872797 39361763 39746343 43531709 50882279 52797381 57825703 66743859 70320453 73100417 86278647 90703193 93410751 94495661 118085289 130595127 152646837 168448787 173477109 219301251 272109579 283486983 298024777 304721963 404779921 505346361 511702919 661469627 894074331 914165889 1179141509 1214339763 1535108757 1984408881 2086173439 3537424527 3874322101 6258520317 11622966303 27120254707 81360764121
- Sum of all divisors σ(n): 149239480320
- Sum of proper divisors (its aliquot sum) s(n): 67878716199
- 81360764121 is a deficient number, because the sum of its proper divisors (67878716199) is less than itself. Its deficiency is 13482047922
Bases of 81360764121
- Binary: 10010111100010111101010111100110110012
- Hexadecimal: 0x12F17ABCD9
- Base-36: 11DK3JDL
Squares and roots of 81360764121
- 81360764121 squared (813607641212) is 6619573938353000902641
- 81360764121 cubed (813607641213) is 538573593779857501672274486943561
-
The
square root of 81360764121 is 285238.0832234713 -
The
cube root of 81360764121 is 4333.1628014857
Scales and comparisons
How big is 81360764121?- 81,360,764,121 seconds is equal to 2,587 years, 1 week, 12 hours, 15 minutes, 21 seconds.
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To count from 1 to 81,360,764,121 would take you about five thousand, one hundred seventy-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 81360764121 cubic inches would be around 361.1 feet tall.
Recreational maths with 81360764121
- 81360764121 backwards is 12146706318
- 81360764121 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81360764121's digits is 39
- More coming soon!
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