81908064000

Names of 81908064000

• Cardinal: 81908064000 can be written as Eighty-one billion, nine hundred eight million, sixty-four thousand.

Scientific notation

• Scientific notation: 8.1908064 × 10¹⁰

Factors of 81908064000

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 513

Divisors of 81908064000

• Number of divisors d(n): 1152
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 27 28 29 30 32 35 36 40 42 45 48 50 54 56 58 60 63 64 70 72 75 80 84 87 90 96 100 105 108 112 116 120 125 126 128 135 140 144 145 150 160 168 174 175 180 189 192 200 203 210 216 224 225 232 240 250 252 256 261 270 280 288 290 300 315 320 336 348 350 360 375 378 384 400 406 420 432 435 448 450 464 467 480 500 504 522 525 540 560 576 580 600 609 630 640 672 675 696 700 720 725 750 756 768 783 800 812 840 864 870 875 896 900 928 934 945 960 1000 1008 1015 1044 1050 1080 1120 1125 1152 1160 1200 1218 1260 1280 1305 1344 1350 1392 1400 1401 1440 1450 1500 1512 1566 1575 1600 1624 1680 1728 1740 1750 1792 1800 1827 1856 1868 1890 1920 2000 2016 2030 2088 2100 2160 2175 2240 2250 2304 2320 2335 2400 2436 2520 2610 2625 2688 2700 2784 2800 2802 2880 2900 3000 3024 3045 3132 3150 3200 3248 3269 3360 3375 3456 3480 3500 3600 3625 3654 3712 3736 3780 3840 3915 4000 4032 4060 4176 4200 4203 4320 4350 4480 4500 4640 4670 4725 4800 4872 5040 5075 5220 5250 5376 5400 5481 5568 5600 5604 5760 5800 6000 6048 6090 6264 6300 6400 6496 6525 6538 6720 6750 6912 6960 7000 7005 7200 7250 7308 7424 7472 7560 7830 7875 8000 8064 8120 8352 8400 8406 8640 8700 8960 9000 9135 9280 9340 9450 9600 9744 9807 10080 10150 10440 10500 10800 10875 10962 11136 11200 11208 11520 11600 11675 12000 12096 12180 12528 12600 12609 12992 13050 13076 13440 13500 13543 13920 14000 14010 14400 14500 14616 14944 15120 15225 15660 15750 16000 16128 16240 16345 16704 16800 16812 17280 17400 18000 18270 18560 18680 18900 19200 19488 19575 19614 20160 20300 20880 21000 21015 21600 21750 21924 22272 22400 22416 23200 23350 23625 24000 24192 24360 25056 25200 25218 25375 25984 26100 26152 26880 27000 27086 27405 27840 28000 28020 28800 29000 29232 29421 29888 30240 30450 31320 31500 32000 32480 32625 32690 33408 33600 33624 34560 34800 35025 36000 36540 37120 37360 37800 38976 39150 39228 40320 40600 40629 41760 42000 42030 43200 43500 43848 44800 44832 45675 46400 46700 47250 48000 48384 48720 49035 50112 50400 50436 50750 51968 52200 52304 54000 54172 54810 55680 56000 56040 57600 58000 58375 58464 58842 59776 60480 60900 62640 63000 63045 64960 65250 65380 66816 67200 67248 67715 69600 70050 72000 73080 74720 75600 76125 77952 78300 78456 80640 81200 81258 81725 83520 84000 84060 86400 87000 87696 88263 89664 91350 92800 93400 94500 94801 96000 97440 97875 98070 100224 100800 100872 101500 104400 104608 105075 108000 108344 109620 111360 112000 112080 116000 116750 116928 117684 119552 120960 121800 121887 125280 126000 126090 129920 130500 130760 134400 134496 135430 137025 139200 140100 144000 146160 147105 149440 151200 152250 155904 156600 156912 162400 162516 163450 167040 168000 168120 172800 174000 175125 175392 176526 179328 182700 185600 186800 189000 189602 194880 195750 196140 200448 201600 201744 203000 203145 208800 209216 210150 216000 216688 219240 224000 224160 228375 232000 233500 233856 235368 241920 243600 243774 245175 250560 252000 252180 259840 261000 261520 268992 270860 274050 278400 280200 284403 288000 292320 294210 298880 302400 304500 313200 313824 315225 324800 325032 326900 334080 336000 336240 338575 348000 350250 350784 353052 358656 365400 365661 373600 378000 379204 389760 391500 392280 403200 403488 406000 406290 408625 417600 418432 420300 432000 433376 438480 441315 448320 456750 464000 467000 467712 470736 474005 487200 487548 490350 501120 504000 504360 522000 523040 525375 537984 541720 548100 556800 560400 568806 584640 588420 597760 604800 609000 609435 626400 627648 630450 649600 650064 653800 672000 672480 677150 685125 696000 700500 701568 706104 730800 731322 735525 747200 756000 758408 779520 783000 784560 806976 812000 812580 817250 835200 836864 840600 853209 864000 866752 876960 882630 896640 913500 928000 934000 941472 948010 974400 975096 980700 1002240 1008000 1008720 1015725 1044000 1046080 1050750 1075968 1083440 1096200 1120800 1137612 1169280 1176840 1209600 1218000 1218870 1225875 1252800 1255296 1260900 1299200 1300128 1307600 1344960 1354300 1370250 1392000 1401000 1403136 1412208 1422015 1461600 1462644 1471050 1494400 1512000 1516816 1566000 1569120 1576125 1613952 1624000 1625160 1634500 1670400 1681200 1692875 1706418 1733504 1753920 1765260 1793280 1827000 1828305 1868000 1882944 1896020 1948800 1950192 1961400 2016000 2017440 2031450 2088000 2092160 2101500 2166880 2192400 2206575 2241600 2275224 2338560 2353680 2370025 2436000 2437740 2451750 2505600 2510592 2521800 2559627 2600256 2615200 2689920 2708600 2740500 2784000 2802000 2824416 2844030 2923200 2925288 2942100 2988800 3024000 3033632 3047175 3132000 3138240 3152250 3227904 3248000 3250320 3269000 3362400 3385750 3412836 3467008 3507840 3530520 3654000 3656610 3677625 3736000 3765888 3792040 3897600 3900384 3922800 4034880 4062900 4176000 4184320 4203000 4266045 4333760 4384800 4413150 4483200 4550448 4707360 4740050 4872000 4875480 4903500 5011200 5043600 5078625 5119254 5200512 5230400 5379840 5417200 5481000 5604000 5648832 5688060 5846400 5850576 5884200 6048000 6067264 6094350 6264000 6276480 6304500 6496000 6500640 6538000 6724800 6771500 6825672 7015680 7061040 7110075 7308000 7313220 7355250 7472000 7531776 7584080 7800768 7845600 8069760 8125800 8352000 8406000 8532090 8667520 8769600 8826300 8966400 9100896 9141525 9414720 9480100 9744000 9750960 9807000 10087200 10157250 10238508 10401024 10460800 10834400 10962000 11032875 11208000 11297664 11376120 11692800 11701152 11768400 11850125 12134528 12188700 12528000 12552960 12609000 12798135 13001280 13076000 13449600 13543000 13651344 14122080 14220150 14616000 14626440 14710500 14944000 15168160 15235875 15601536 15691200 16139520 16251600 16812000 17064180 17335040 17539200 17652600 18201792 18283050 18829440 18960200 19488000 19501920 19614000 20174400 20314500 20477016 20921600 21330225 21668800 21924000 22065750 22416000 22595328 22752240 23402304 23536800 23700250 24269056 24377400 25056000 25218000 25596270 26002560 26152000 26899200 27086000 27302688 28244160 28440300 29232000 29252880 29421000 30336320 30471750 31203072 31382400 32503200 33624000 34128360 35078400 35305200 35550375 36403584 36566100 37658880 37920400 39003840 39228000 40348800 40629000 40954032 42660450 43337600 43848000 44131500 44832000 45504480 45707625 46804608 47073600 47400500 48754800 50436000 51192540 52005120 52304000 54172000 54605376 56488320 56880600 58464000 58505760 58842000 60672640 60943500 62764800 63990675 65006400 67248000 68256720 70610400 71100750 72807168 73132200 75840800 78007680 78456000 80697600 81258000 81908064 85320900 86675200 87696000 88263000 91008960 91415250 93609216 94147200 94801000 97509600 100872000 102385080 104608000 106651125 108344000 109210752 112976640 113761200 117011520 117684000 121345280 121887000 127981350 130012800 134496000 136513440 141220800 142201500 146264400 151681600 156015360 156912000 162516000 163816128 170641800 175392000 176526000 182017920 182830500 188294400 189602000 195019200 201744000 204770160 213302250 216688000 218421504 227522400 234023040 235368000 243774000 255962700 260025600 273026880 282441600 284403000 292528800 303363200 313824000 319953375 325032000 327632256 341283600 353052000 364035840 365661000 379204000 390038400 403488000 409540320 426604500 433376000 455044800 468046080 470736000 487548000 511925400 546053760 564883200 568806000 585057600 606726400 639906750 650064000 655264512 682567200 706104000 731322000 758408000 780076800 819080640 853209000 910089600 941472000 975096000 1023850800 1092107520 1137612000 1170115200 1279813500 1300128000 1365134400 1412208000 1462644000 1516816000 1638161280 1706418000 1820179200 1950192000 2047701600 2275224000 2340230400 2559627000 2730268800 2824416000 2925288000 3033632000 3276322560 3412836000 3900384000 4095403200 4550448000 5119254000 5460537600 5850576000 6825672000 8190806400 9100896000 10238508000 11701152000 13651344000 16381612800 20477016000 27302688000 40954032000 81908064000
• Sum of all divisors σ(n): 358148044800
• Sum of proper divisors (its aliquot sum) s(n): 276239980800
• 81908064000 is an abundant number, because the sum of its proper divisors (276239980800) is greater than itself. Its abundance is 194331916800

Bases of 81908064000

• Binary: 1001100010010000110011101111100000000₂
• Hexadecimal: 0x131219DF00
• Base-36: 11MLY2O0

Squares and roots of 81908064000

• 81908064000 squared (81908064000²) is 6708930948228096000000
• 81908064000 cubed (81908064000³) is 549515545479047573766144000000000
• The square root of 81908064000 is 286195.8490265015
• The cube root of 81908064000 is 4342.8572434377

Scales and comparisons

• 81,908,064,000 seconds is equal to 2,604 years, 22 weeks.
• To count from 1 to 81,908,064,000 would take you about five thousand, two hundred eight 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 81908064000 cubic inches would be around 361.9 feet tall.

Recreational maths with 81908064000

• 81908064000 backwards is 00046080918
• 81908064000 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81908064000's digits is 36
• More coming soon!