81421355520
81,421,355,520 is an even composite number composed of six prime numbers multiplied together.
81421355520 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of eight hundred divisors.
Prime factorization of 81421355520:
29 × 34 × 5 × 41 × 61 × 157
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 41 × 61 × 157)See below for interesting mathematical facts about the number 81421355520 from the Numbermatics database.
Names of 81421355520
- Cardinal: 81421355520 can be written as Eighty-one billion, four hundred twenty-one million, three hundred fifty-five thousand, five hundred twenty.
Scientific notation
- Scientific notation: 8.142135552 × 1010
Factors of 81421355520
Divisors of 81421355520
- Number of divisors d(n): 800
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 41 45 48 54 60 61 64 72 80 81 82 90 96 108 120 122 123 128 135 144 157 160 162 164 180 183 192 205 216 240 244 246 256 270 288 305 314 320 324 328 360 366 369 384 405 410 432 471 480 488 492 512 540 549 576 610 615 628 640 648 656 720 732 738 768 785 810 820 864 915 942 960 976 984 1080 1098 1107 1152 1220 1230 1256 1280 1296 1312 1413 1440 1464 1476 1536 1570 1620 1640 1647 1728 1830 1845 1884 1920 1952 1968 2160 2196 2214 2304 2355 2440 2460 2501 2512 2560 2592 2624 2745 2826 2880 2928 2952 3140 3240 3280 3294 3321 3456 3660 3690 3768 3840 3904 3936 4239 4320 4392 4428 4608 4710 4880 4920 4941 5002 5024 5184 5248 5490 5535 5652 5760 5856 5904 6280 6437 6480 6560 6588 6642 6912 7065 7320 7380 7503 7536 7680 7808 7872 8235 8478 8640 8784 8856 9420 9577 9760 9840 9882 10004 10048 10368 10496 10980 11070 11304 11520 11712 11808 12505 12560 12717 12874 12960 13120 13176 13284 13824 14130 14640 14760 15006 15072 15616 15744 16470 16605 16956 17280 17568 17712 18840 19154 19311 19520 19680 19764 20008 20096 20736 20992 21195 21960 22140 22509 22608 23040 23424 23616 24705 25010 25120 25434 25748 25920 26240 26352 26568 28260 28731 29280 29520 30012 30144 31232 31488 32185 32940 33210 33912 34560 35136 35424 37515 37680 38308 38622 39040 39360 39528 40016 40192 41472 42390 43920 44280 45018 45216 46848 47232 47885 49410 50020 50240 50868 51496 51840 52480 52704 53136 56520 57462 57933 58560 59040 60024 60288 62976 63585 64370 65880 66420 67527 67824 69120 70272 70848 75030 75360 76616 77244 78080 78720 79056 80032 80384 84780 86193 87840 88560 90036 90432 93696 94464 95770 96555 98820 100040 100480 101736 102992 103680 104960 105408 106272 112545 113040 114924 115866 117120 118080 120048 120576 127170 128740 131760 132840 135054 135648 140544 141696 143655 150060 150720 153232 154488 156160 157440 158112 160064 169560 172386 173799 175680 177120 180072 180864 188928 191540 193110 197640 200080 200960 202581 203472 205984 207360 210816 212544 225090 226080 229848 231732 234240 236160 240096 241152 254340 257480 258579 263520 265680 270108 271296 281088 283392 287310 289665 300120 301440 306464 308976 314880 316224 320128 337635 339120 344772 347598 351360 354240 360144 361728 383080 386220 392657 395280 400160 401920 405162 406944 411968 421632 425088 430965 450180 452160 459696 463464 468480 472320 480192 508680 514960 517158 521397 527040 531360 540216 542592 566784 574620 579330 600240 602880 612928 617952 632448 640256 675270 678240 689544 695196 702720 708480 720288 723456 766160 772440 775737 785314 790560 800320 810324 813888 823936 843264 850176 861930 868995 900360 904320 919392 926928 944640 960384 1012905 1017360 1029920 1034316 1042794 1054080 1062720 1080432 1085184 1149240 1158660 1177971 1200480 1205760 1225856 1235904 1264896 1280512 1292895 1350540 1356480 1379088 1390392 1405440 1416960 1440576 1532320 1544880 1551474 1570628 1581120 1600640 1620648 1627776 1647872 1700352 1723860 1737990 1800720 1808640 1838784 1853856 1920768 1963285 2025810 2034720 2059840 2068632 2085588 2108160 2125440 2160864 2170368 2298480 2317320 2355942 2400960 2451712 2471808 2529792 2585790 2606985 2701080 2712960 2758176 2780784 2833920 2881152 3064640 3089760 3102948 3141256 3162240 3201280 3241296 3255552 3295744 3447720 3475980 3533913 3601440 3617280 3677568 3707712 3841536 3878685 3926570 4051620 4069440 4119680 4137264 4171176 4216320 4250880 4321728 4596960 4634640 4711884 4801920 4903424 4943616 5171580 5213970 5402160 5425920 5516352 5561568 5762304 5889855 6129280 6179520 6205896 6282512 6324480 6402560 6482592 6511104 6895440 6951960 7067826 7202880 7355136 7415424 7757370 7853140 8103240 8138880 8239360 8274528 8342352 8501760 8643456 9193920 9269280 9423768 9603840 9887232 10343160 10427940 10601739 10804320 10851840 11032704 11123136 11524608 11779710 12258560 12359040 12411792 12565024 12648960 12965184 13790880 13903920 14135652 14405760 14710272 14830848 15514740 15706280 16206480 16277760 16478720 16549056 16684704 17286912 17669565 18387840 18538560 18847536 19207680 20686320 20855880 21203478 21608640 22065408 22246272 23559420 24517120 24718080 24823584 25130048 25930368 27581760 27807840 28271304 28811520 29661696 31029480 31412560 31805217 32412960 32555520 33098112 33369408 34573824 35339130 36775680 37077120 37695072 41372640 41711760 42406956 43217280 44130816 44492544 47118840 49436160 49647168 50260096 51860736 53008695 55163520 55615680 56542608 57623040 62058960 62825120 63610434 64825920 66196224 66738816 70678260 73551360 74154240 75390144 82745280 83423520 84813912 86434560 88985088 94237680 99294336 100520192 103721472 106017390 110327040 111231360 113085216 124117920 125650240 127220868 129651840 132392448 133477632 141356520 148308480 150780288 159026085 165490560 166847040 169627824 172869120 188475360 198588672 201040384 212034780 220654080 222462720 226170432 248235840 251300480 254441736 259303680 266955264 282713040 301560576 318052170 330981120 333694080 339255648 376950720 397177344 424069560 444925440 452340864 496471680 502600960 508883472 518607360 565426080 603121152 636104340 661962240 667388160 678511296 753901440 848139120 904681728 992943360 1005201920 1017766944 1130852160 1272208680 1334776320 1357022592 1507802880 1696278240 1809363456 1985886720 2035533888 2261704320 2544417360 2714045184 3015605760 3392556480 4071067776 4523408640 5088834720 5428090368 6785112960 8142135552 9046817280 10177669440 13570225920 16284271104 20355338880 27140451840 40710677760 81421355520
- Sum of all divisors σ(n): 305569723536
- Sum of proper divisors (its aliquot sum) s(n): 224148368016
- 81421355520 is an abundant number, because the sum of its proper divisors (224148368016) is greater than itself. Its abundance is 142727012496
Bases of 81421355520
- Binary: 10010111101010001011101001010000000002
- Hexadecimal: 0x12F5174A00
- Base-36: 11EK6800
Squares and roots of 81421355520
- 81421355520 squared (814213555202) is 6629437134714234470400
- 81421355520 cubed (814213555203) is 539777757843057818419077316608000
-
The
square root of 81421355520 is 285344.2754288229 -
The
cube root of 81421355520 is 4334.2382061953
Scales and comparisons
How big is 81421355520?- 81,421,355,520 seconds is equal to 2,588 years, 49 weeks, 1 day, 19 hours, 12 minutes.
-
To count from 1 to 81,421,355,520 would take you about five thousand, one hundred seventy-seven 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 81421355520 cubic inches would be around 361.2 feet tall.
Recreational maths with 81421355520
- 81421355520 backwards is 02555312418
- 81421355520 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81421355520's digits is 36
- More coming soon!
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The information we have on file for 81421355520 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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