81329439744
81,329,439,744 is an even composite number composed of five prime numbers multiplied together.
81329439744 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of five hundred twenty-eight divisors.
Prime factorization of 81329439744:
210 × 33 × 7 × 61 × 832
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 7 × 61 × 83 × 83)See below for interesting mathematical facts about the number 81329439744 from the Numbermatics database.
Names of 81329439744
- Cardinal: 81329439744 can be written as Eighty-one billion, three hundred twenty-nine million, four hundred thirty-nine thousand, seven hundred forty-four.
Scientific notation
- Scientific notation: 8.1329439744 × 1010
Factors of 81329439744
Divisors of 81329439744
- Number of divisors d(n): 528
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 61 63 64 72 83 84 96 108 112 122 126 128 144 166 168 183 189 192 216 224 244 249 252 256 288 332 336 366 378 384 427 432 448 488 498 504 512 549 576 581 664 672 732 747 756 768 854 864 896 976 996 1008 1024 1098 1152 1162 1281 1328 1344 1464 1494 1512 1536 1647 1708 1728 1743 1792 1952 1992 2016 2196 2241 2304 2324 2562 2656 2688 2928 2988 3024 3072 3294 3416 3456 3486 3584 3843 3904 3984 4032 4392 4482 4608 4648 5063 5124 5229 5312 5376 5856 5976 6048 6588 6832 6889 6912 6972 7168 7686 7808 7968 8064 8784 8964 9216 9296 10126 10248 10458 10624 10752 11529 11712 11952 12096 13176 13664 13778 13824 13944 15189 15372 15616 15687 15936 16128 17568 17928 18592 20252 20496 20667 20916 21248 21504 23058 23424 23904 24192 26352 27328 27556 27648 27888 30378 30744 31232 31374 31872 32256 35136 35441 35856 37184 40504 40992 41334 41832 42496 45567 46116 46848 47808 48223 48384 52704 54656 55112 55776 60756 61488 62001 62464 62748 63744 64512 70272 70882 71712 74368 81008 81984 82668 83664 84992 91134 92232 93696 95616 96446 96768 105408 106323 109312 110224 111552 121512 122976 124002 125496 127488 136701 140544 141764 143424 144669 148736 162016 163968 165336 167328 182268 184464 186003 187392 191232 192892 193536 210816 212646 218624 220448 223104 243024 245952 248004 250992 254976 273402 281088 283528 286848 289338 297472 318969 324032 327936 330672 334656 364536 368928 372006 382464 385784 420229 421632 425292 434007 437248 440896 446208 486048 491904 496008 501984 546804 562176 567056 573696 578676 594944 637938 648064 655872 661344 669312 729072 737856 744012 764928 771568 840458 843264 850584 868014 881792 892416 956907 972096 983808 992016 1003968 1093608 1134112 1147392 1157352 1260687 1275876 1296128 1302021 1311744 1322688 1338624 1458144 1475712 1488024 1543136 1680916 1686528 1701168 1736028 1763584 1784832 1913814 1944192 1967616 1984032 2007936 2187216 2268224 2294784 2314704 2521374 2551752 2592256 2604042 2645376 2677248 2916288 2941603 2951424 2976048 3086272 3361832 3402336 3472056 3527168 3782061 3827628 3888384 3935232 3968064 4015872 4374432 4536448 4629408 5042748 5103504 5184512 5208084 5290752 5354496 5832576 5883206 5902848 5952096 6172544 6723664 6804672 6944112 7054336 7564122 7655256 7776768 7936128 8031744 8748864 8824809 9072896 9258816 10085496 10207008 10416168 10581504 11346183 11665152 11766412 11805696 11904192 12345088 13447328 13609344 13888224 15128244 15310512 15553536 15872256 16063488 17497728 17649618 18145792 18517632 20170992 20414016 20832336 21163008 22692366 23330304 23532824 23808384 24690176 26474427 26894656 27218688 27776448 30256488 30621024 31744512 34995456 35299236 36291584 37035264 40341984 40828032 41664672 45384732 46660608 47065648 47616768 49380352 52948854 53789312 54437376 55552896 60512976 61242048 63489024 69990912 70598472 74070528 79423281 80683968 81656064 83329344 90769464 94131296 95233536 105897708 107578624 108874752 111105792 121025952 122484096 139981824 141196944 148141056 158846562 161367936 163312128 166658688 181538928 188262592 190467072 211795416 215157248 222211584 242051904 244968192 282393888 317693124 322735872 326624256 333317376 363077856 376525184 423590832 430314496 444423168 484103808 489936384 564787776 635386248 645471744 666634752 726155712 753050368 847181664 968207616 979872768 1129575552 1270772496 1290943488 1333269504 1452311424 1506100736 1694363328 1936415232 2259151104 2541544992 2904622848 3012201472 3388726656 3872830464 4518302208 5083089984 5809245696 6777453312 9036604416 10166179968 11618491392 13554906624 20332359936 27109813248 40664719872 81329439744
- Sum of all divisors σ(n): 283190823040
- Sum of proper divisors (its aliquot sum) s(n): 201861383296
- 81329439744 is an abundant number, because the sum of its proper divisors (201861383296) is greater than itself. Its abundance is 120531943552
Bases of 81329439744
- Binary: 10010111011111001110011000100000000002
- Hexadecimal: 0x12EF9CC400
- Base-36: 11D1G5C0
Squares and roots of 81329439744
- 81329439744 squared (813294397442) is 6614477769072926785536
- 81329439744 cubed (813294397443) is 537951771157844145745973722742784
-
The
square root of 81329439744 is 285183.1687600093 -
The
cube root of 81329439744 is 4332.6066323059
Scales and comparisons
How big is 81329439744?- 81,329,439,744 seconds is equal to 2,586 years, 1 week, 1 day, 23 hours, 2 minutes, 24 seconds.
-
To count from 1 to 81,329,439,744 would take you about five thousand, one hundred seventy-two 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 81329439744 cubic inches would be around 361.1 feet tall.
Recreational maths with 81329439744
- 81329439744 backwards is 44793492318
- 81329439744 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81329439744's digits is 54
- More coming soon!
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