81640664136720000
81,640,664,136,720,000 is an even composite number composed of five prime numbers multiplied together.
81640664136720000 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one thousand, nine hundred twenty divisors.
Prime factorization of 81640664136720000:
27 × 33 × 54 × 132 × 6073
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 5 × 5 × 5 × 13 × 13 × 607 × 607 × 607)See below for interesting mathematical facts about the number 81640664136720000 from the Numbermatics database.
Names of 81640664136720000
- Cardinal: 81640664136720000 can be written as Eighty-one quadrillion, six hundred forty trillion, six hundred sixty-four billion, one hundred thirty-six million, seven hundred twenty thousand.
Scientific notation
- Scientific notation: 8.164066413672 × 1016
Factors of 81640664136720000
Divisors of 81640664136720000
- Number of divisors d(n): 1920
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 25 26 27 30 32 36 39 40 45 48 50 52 54 60 64 65 72 75 78 80 90 96 100 104 108 117 120 125 128 130 135 144 150 156 160 169 180 192 195 200 208 216 225 234 240 250 260 270 288 300 312 320 325 338 351 360 375 384 390 400 416 432 450 468 480 500 507 520 540 576 585 600 607 624 625 640 650 675 676 702 720 750 780 800 832 845 864 900 936 960 975 1000 1014 1040 1080 1125 1152 1170 1200 1214 1248 1250 1300 1350 1352 1404 1440 1500 1521 1560 1600 1625 1664 1690 1728 1755 1800 1821 1872 1875 1920 1950 2000 2028 2080 2160 2250 2340 2400 2428 2496 2500 2535 2600 2700 2704 2808 2880 2925 3000 3035 3042 3120 3200 3250 3375 3380 3456 3510 3600 3642 3744 3750 3900 4000 4056 4160 4225 4320 4500 4563 4680 4800 4856 4875 4992 5000 5070 5200 5400 5408 5463 5616 5625 5760 5850 6000 6070 6084 6240 6500 6750 6760 7020 7200 7284 7488 7500 7605 7800 7891 8000 8112 8125 8320 8450 8640 8775 9000 9105 9126 9360 9600 9712 9750 10000 10140 10400 10800 10816 10926 11232 11250 11700 12000 12140 12168 12480 12675 13000 13500 13520 14040 14400 14568 14625 14976 15000 15175 15210 15600 15782 16000 16224 16250 16389 16875 16900 17280 17550 18000 18210 18252 18720 19424 19500 20000 20280 20800 21125 21600 21632 21852 22464 22500 22815 23400 23673 24000 24280 24336 24375 24960 25350 26000 27000 27040 27315 28080 28800 29136 29250 30000 30350 30420 31200 31564 32448 32500 32778 33750 33800 35100 36000 36420 36504 37440 38025 38848 39000 39455 40000 40560 41600 42250 43200 43704 43875 44928 45000 45525 45630 46800 47346 48000 48560 48672 48750 50700 52000 54000 54080 54630 56160 58272 58500 60000 60700 60840 62400 63128 63375 64896 65000 65556 67500 67600 70200 71019 72000 72840 73008 73125 74880 75875 76050 77696 78000 78910 80000 81120 81945 84500 86400 87408 87750 90000 91050 91260 93600 94692 97120 97344 97500 101400 102583 104000 105625 108000 108160 109260 112320 114075 116544 117000 118365 120000 121400 121680 124800 126256 126750 130000 131112 135000 135200 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6280051087440000 6803388678060000 8164066413672000 9071184904080000 10205083017090000 13606777356120000 16328132827344000 20410166034180000 27213554712240000 40820332068360000 81640664136720000
- Sum of all divisors σ(n): 326576127936960000
- Sum of proper divisors (its aliquot sum) s(n): 244935463800240000
- 81640664136720000 is an abundant number, because the sum of its proper divisors (244935463800240000) is greater than itself. Its abundance is 163294799663520000
Bases of 81640664136720000
- Binary: 1001000100000101111000000011000010001100010011110100000002
- Hexadecimal: 0x1220BC061189E80
- Base-36: MBV77C7IQO0
Squares and roots of 81640664136720000
- 81640664136720000 squared (816406641367200002) is 6665198040684719182852358400000000
- 81640664136720000 cubed (816406641367200003) is 544151194644265364864018760421552040448000000000000
-
The
square root of 81640664136720000 is 285728304.7524693519 -
The
cube root of 81640664136720000 is 433812.6144565407
Scales and comparisons
How big is 81640664136720000?- 81,640,664,136,720,000 seconds is equal to 2,595,920,588 years, 20 weeks, 3 days.
-
To count from 1 to 81,640,664,136,720,000 would take you about seven billion, seven hundred eighty-seven million, seven hundred sixty-one thousand, seven hundred sixty-five 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 81640664136720000 cubic inches would be around 36151.1 feet tall.
Recreational maths with 81640664136720000
- 81640664136720000 backwards is 00002763146604618
- 81640664136720000 is a
Harshad number . - The number of decimal digits it has is: 17
- The sum of 81640664136720000's digits is 54
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The information we have on file for 81640664136720000 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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