81327138480

Names of 81327138480

• Cardinal: 81327138480 can be written as Eighty-one billion, three hundred twenty-seven million, one hundred thirty-eight thousand, four hundred eighty.

Scientific notation

• Scientific notation: 8.132713848 × 10¹⁰

Factors of 81327138480

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3589

Divisors of 81327138480

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 31 35 36 40 42 45 48 49 54 56 60 62 63 70 72 80 84 90 93 98 105 108 112 120 124 126 135 140 144 147 155 168 180 186 189 196 210 216 217 240 245 248 252 270 279 280 294 310 315 336 343 360 372 378 392 420 432 434 441 465 490 496 504 540 558 560 588 620 630 651 686 720 735 744 756 784 837 840 868 882 930 945 980 1008 1029 1080 1085 1116 1176 1240 1260 1302 1323 1372 1395 1470 1488 1512 1519 1674 1680 1715 1736 1764 1860 1890 1953 1960 2058 2160 2170 2205 2232 2352 2480 2520 2604 2646 2744 2790 2940 3024 3038 3087 3255 3348 3430 3472 3528 3541 3720 3780 3906 3920 4116 4185 4340 4410 4464 4557 5040 5145 5208 5292 5488 5580 5859 5880 6076 6174 6510 6615 6696 6860 7056 7082 7440 7560 7595 7812 8232 8370 8680 8820 9114 9261 9765 10290 10416 10584 10623 10633 11160 11718 11760 12152 12348 13020 13230 13392 13671 13720 14164 15120 15190 15435 15624 16464 16740 17360 17640 17705 18228 18522 19530 20580 21168 21246 21266 22320 22785 23436 24304 24696 24787 26040 26460 27342 27440 28328 29295 30380 30870 31248 31869 31899 33480 35280 35410 36456 37044 39060 41013 41160 42492 42532 45570 46305 46872 49392 49574 52080 52920 53115 53165 54684 56656 58590 60760 61740 63738 63798 66960 68355 70820 72912 74088 74361 78120 82026 82320 84984 85064 91140 92610 93744 95607 95697 99148 105840 106230 106330 109368 109771 117180 121520 123480 123935 127476 127596 136710 141640 148176 148722 156240 159345 159495 164052 169968 170128 173509 182280 185220 191214 191394 198296 205065 212460 212660 218736 219542 223083 234360 246960 247870 254952 255192 273420 283280 287091 297444 318690 318990 328104 329313 347018 364560 370440 371805 382428 382788 396592 410130 424920 425320 439084 446166 468720 478035 478485 495740 509904 510384 520527 546840 548855 574182 594888 637380 637980 656208 658626 669249 694036 740880 743610 764856 765576 768397 820260 849840 850640 867545 878168 892332 956070 956970 987939 991480 1041054 1093680 1097710 1115415 1148364 1189776 1214563 1274760 1275960 1317252 1338498 1388072 1435455 1487220 1529712 1531152 1536794 1561581 1640520 1646565 1735090 1756336 1784664 1912140 1913940 1975878 1982960 2082108 2195420 2230830 2296728 2305191 2429126 2549520 2551920 2602635 2634504 2676996 2776144 2870910 2963817 2974440 3073588 3123162 3281040 3293130 3346245 3470180 3569328 3643689 3824280 3827880 3841985 3951756 4164216 4390840 4461660 4593456 4610382 4684743 4858252 4939695 5205270 5269008 5353992 5378779 5741820 5927634 5948880 6072815 6147176 6246324 6586260 6692490 6915573 6940360 7287378 7648560 7655760 7683970 7807905 7903512 8328432 8781680 8923320 9220764 9369486 9716504 9879390 10410540 10707984 10757558 10931067 11483640 11525955 11855268 12145630 12294352 12492648 13172520 13384980 13831146 13880720 14574756 14819085 15367940 15615810 15807024 16136337 17846640 18218445 18441528 18738972 19433008 19758780 20746719 20821080 21515116 21862134 22967280 23051910 23423715 23710536 24291260 24985296 26345040 26769960 26893895 27662292 29149512 29638170 30735880 31231620 32272674 32793201 34577865 36436890 36883056 37477944 37651453 39517560 41493438 41642160 43030232 43724268 46103820 46847430 47421072 48409011 48582520 53539920 53787790 54655335 55324584 58299024 59276340 61471760 62463240 64545348 65586402 69155730 72873780 74955888 75302906 79035120 80681685 82986876 86060464 87448536 92207640 93694860 96818022 97165040 103733595 107575580 109310670 110649168 112954359 118552680 124926480 129090696 131172804 138311460 145227033 145747560 150605812 161363370 163966005 165973752 174897072 184415280 187389720 188257265 193636044 207467190 215151160 218621340 225908718 237105360 242045055 258181392 262345608 276622920 290454066 291495120 301211624 322726740 327932010 331947504 338863077 374779440 376514530 387272088 414934380 430302320 437242680 451817436 484090110 524691216 553245840 564771795 580908132 602423248 645453480 655864020 677726154 726135165 753029060 774544176 829868760 874485360 903634872 968180220 1016589231 1129543590 1161816264 1290906960 1311728040 1355452308 1452270330 1506058120 1659737520 1694315385 1807269744 1936360440 2033178462 2259087180 2323632528 2623456080 2710904616 2904540660 3012116240 3388630770 3872720880 4066356924 4518174360 5082946155 5421809232 5809081320 6777261540 8132713848 9036348720 10165892310 11618162640 13554523080 16265427696 20331784620 27109046160 40663569240 81327138480
• Sum of all divisors σ(n): 337311744000
• Sum of proper divisors (its aliquot sum) s(n): 255984605520
• 81327138480 is an abundant number, because the sum of its proper divisors (255984605520) is greater than itself. Its abundance is 174657467040

Bases of 81327138480

• Binary: 1001011101111011110011010011010110000₂
• Hexadecimal: 0x12EF79A6B0
• Base-36: 11D02TO0

Squares and roots of 81327138480

• 81327138480 squared (81327138480²) is 6614103453345096710400
• 81327138480 cubed (81327138480³) is 537906107471242899395693256192000
• The square root of 81327138480 is 285179.1340193037
• The cube root of 81327138480 is 4332.5657673753

Scales and comparisons

• 81,327,138,480 seconds is equal to 2,585 years, 49 weeks, 3 days, 7 hours, 48 minutes.
• To count from 1 to 81,327,138,480 would take you about five thousand, one hundred seventy-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 81327138480 cubic inches would be around 361 feet tall.

Recreational maths with 81327138480

• 81327138480 backwards is 08483172318
• 81327138480 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81327138480's digits is 45
• More coming soon!