81629998164
81,629,998,164 is an even composite number composed of seven prime numbers multiplied together.
81629998164 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred thirty-two divisors.
Prime factorization of 81629998164:
22 × 32 × 112 × 13 × 71 × 79 × 257
(2 × 2 × 3 × 3 × 11 × 11 × 13 × 71 × 79 × 257)See below for interesting mathematical facts about the number 81629998164 from the Numbermatics database.
Names of 81629998164
- Cardinal: 81629998164 can be written as Eighty-one billion, six hundred twenty-nine million, nine hundred ninety-eight thousand, one hundred sixty-four.
Scientific notation
- Scientific notation: 8.1629998164 × 1010
Factors of 81629998164
Divisors of 81629998164
- Number of divisors d(n): 432
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Complete list of divisors:
1 2 3 4 6 9 11 12 13 18 22 26 33 36 39 44 52 66 71 78 79 99 117 121 132 142 143 156 158 198 213 234 237 242 257 284 286 316 363 396 426 429 468 474 484 514 572 639 711 726 771 781 852 858 869 923 948 1027 1028 1089 1278 1287 1422 1452 1542 1562 1573 1716 1738 1846 2054 2178 2313 2343 2556 2574 2607 2769 2827 2844 3081 3084 3124 3146 3341 3476 3692 4108 4356 4626 4686 4719 5148 5214 5538 5609 5654 6162 6292 6682 7029 7821 8307 8481 8591 9243 9252 9372 9438 9559 10023 10153 10428 11076 11218 11297 11308 12324 13364 14058 14157 15642 16614 16827 16962 17182 18247 18486 18876 19118 20046 20303 20306 22436 22594 25443 25773 28116 28314 28677 30069 30459 31097 31284 33228 33654 33891 33924 34364 36494 36751 36972 38236 40092 40606 40612 45188 50481 50886 51546 54741 56628 57354 60138 60909 60918 61699 62194 67308 67782 72917 72988 73502 77319 81212 86031 91377 93291 100962 101673 101772 103092 109482 110253 111683 114708 120276 121818 121836 123398 124267 124388 135564 145834 147004 154638 164223 172062 182727 182754 185097 186582 200717 201924 203346 218751 218964 220506 223333 223366 237211 243636 246796 248534 263939 279873 291668 309276 328446 330759 335049 344124 365454 365508 370194 372801 373164 401434 404261 406692 437502 441012 446666 446732 474422 497068 527878 555291 559746 602151 656253 656892 661518 669999 670098 678689 711633 730908 740388 745602 791817 802087 802868 808522 875004 893332 948844 1005147 1055756 1110582 1118403 1119492 1204302 1212783 1312506 1323036 1339998 1340196 1357378 1423266 1441513 1491204 1583634 1604174 1617044 1806453 2009997 2010294 2036067 2134899 2207887 2221164 2236806 2375451 2406261 2408604 2425566 2456663 2609321 2625012 2679996 2714756 2846532 2883026 2903329 3167268 3208348 3612906 3638349 4019994 4020588 4072134 4269798 4324539 4415774 4473612 4750902 4812522 4851132 4913326 5218642 5766052 5806658 6108201 6623661 7218783 7225812 7276698 7369989 7827963 8039988 8144268 8539596 8649078 8709987 8822957 8831548 9501804 9625044 9826652 10437284 11613316 12216402 12973617 13247322 14437566 14553396 14739978 15655926 15856643 17298156 17419974 17645914 18739669 19870983 22109967 23483889 24432804 25947234 26129961 26468871 26494644 28702531 28875132 29479956 31311852 31713286 31936619 34839948 35291828 37479338 39741966 44219934 46967778 47569929 51894468 52259922 52937742 56219007 57405062 63426572 63873238 74958676 79406613 79483932 86107593 88439868 93935556 95139858 95809857 104519844 105875484 112438014 114810124 127746476 142709787 158813226 168657021 172215186 174423073 190279716 191619714 206136359 224876028 258322779 285419574 287429571 317626452 337314042 344430372 348846146 383239428 412272718 516645558 523269219 570839148 574859142 618409077 674628084 697692292 824545436 1033291116 1046538438 1149718284 1236818154 1569807657 1855227231 2093076876 2267499949 2473636308 3139615314 3710454462 4534999898 6279230628 6802499847 7420908924 9069999796 13604999694 20407499541 27209999388 40814999082 81629998164
- Sum of all divisors σ(n): 251804367360
- Sum of proper divisors (its aliquot sum) s(n): 170174369196
- 81629998164 is an abundant number, because the sum of its proper divisors (170174369196) is greater than itself. Its abundance is 88544371032
Bases of 81629998164
- Binary: 10011000000011000011011101100010101002
- Hexadecimal: 0x130186EC54
- Base-36: 11I0E5P0
Squares and roots of 81629998164
- 81629998164 squared (816299981642) is 6663456600254643370896
- 81629998164 cubed (816299981643) is 543937950044680220298715251034944
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The
square root of 81629998164 is 285709.6396063667 -
The
cube root of 81629998164 is 4337.9372176757
Scales and comparisons
How big is 81629998164?- 81,629,998,164 seconds is equal to 2,595 years, 30 weeks, 1 day, 15 hours, 29 minutes, 24 seconds.
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To count from 1 to 81,629,998,164 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 81629998164 cubic inches would be around 361.5 feet tall.
Recreational maths with 81629998164
- 81629998164 backwards is 46189992618
- The number of decimal digits it has is: 11
- The sum of 81629998164's digits is 63
- More coming soon!
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