81042684800

Names of 81042684800

• Cardinal: 81042684800 can be written as Eighty-one billion, forty-two million, six hundred eighty-four thousand, eight hundred.

Scientific notation

• Scientific notation: 8.10426848 × 10¹⁰

Factors of 81042684800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 7717

Divisors of 81042684800

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 5 7 8 10 11 14 16 20 22 25 28 32 35 40 43 44 50 55 56 64 70 77 80 86 88 100 110 112 128 140 154 160 172 175 176 200 215 220 224 275 280 301 308 320 344 350 352 385 400 430 440 448 473 550 560 602 616 640 688 700 704 770 800 860 880 896 946 1075 1100 1120 1204 1232 1376 1400 1408 1505 1540 1600 1720 1760 1892 1925 2150 2200 2240 2365 2408 2464 2752 2800 3010 3080 3200 3311 3440 3520 3784 3850 4300 4400 4480 4730 4816 4928 5504 5600 6020 6160 6622 6880 7040 7525 7568 7649 7700 8600 8800 9460 9632 9856 11200 11825 12040 12320 13244 13760 15050 15136 15298 15400 16555 17200 17600 18920 19264 22400 23650 24080 24640 26488 27520 30100 30272 30596 30800 33110 34400 35200 37840 38245 38528 47300 48160 49280 52976 53543 60200 60544 61192 61600 66220 68800 75680 76490 82775 84139 94600 96320 105952 107086 120400 122384 123200 132440 137600 151360 152980 165550 168278 189200 191225 192640 211904 214172 240800 244768 246400 264880 267715 302720 305960 328907 331100 336556 378400 382450 420695 423808 428344 481600 489536 529760 535430 588973 611920 657814 662200 673112 756800 764900 841390 856688 963200 979072 1059520 1070860 1177946 1223840 1315628 1324400 1338575 1346224 1513600 1529800 1644535 1682780 1713376 2103475 2119040 2141720 2302349 2355892 2447680 2631256 2648800 2677150 2692448 2944865 3059600 3289070 3365560 3426752 3617977 4206950 4283440 4604698 4711784 4895360 5262512 5297600 5354300 5384896 5889730 6119200 6578140 6731120 6853504 7235954 8222675 8413900 8566880 9209396 9423568 10525024 10595200 10708600 10769792 11511745 11779460 12238400 13156280 13462240 14471908 14724325 16445350 16827800 17133760 18089885 18418792 18847136 21050048 21417200 23023490 23558920 24476800 25325839 26312560 26924480 28943816 29448650 32890700 33655600 34267520 36179770 36837584 37694272 42100096 42834400 46046980 47117840 50651678 52625120 53848960 57558725 57887632 58897300 65781400 67311200 72359540 73675168 75388544 85668800 90449425 92093960 94235680 101303356 105250240 115117450 115775264 117794600 126629195 131562800 134622400 144719080 147350336 171337600 180898850 184187920 188471360 202606712 210500480 230234900 231550528 235589200 253258390 263125600 269244800 289438160 294700672 361797700 368375840 376942720 405213424 460469800 463101056 471178400 506516780 526251200 578876320 633145975 723595400 736751680 810426848 920939600 942356800 1013033560 1052502400 1157752640 1266291950 1447190800 1473503360 1620853696 1841879200 1884713600 2026067120 2315505280 2532583900 2894381600 3241707392 3683758400 4052134240 5065167800 5788763200 7367516800 8104268480 10130335600 11577526400 16208536960 20260671200 40521342400 81042684800
• Sum of all divisors σ(n): 255439008000
• Sum of proper divisors (its aliquot sum) s(n): 174396323200
• 81042684800 is an abundant number, because the sum of its proper divisors (174396323200) is greater than itself. Its abundance is 93353638400

Bases of 81042684800

• Binary: 1001011011110100001010011101110000000₂
• Hexadecimal: 0x12DE853B80
• Base-36: 118APZSW

Squares and roots of 81042684800

• 81042684800 squared (81042684800²) is 6567916759592151040000
• 81042684800 cubed (81042684800³) is 532281607740264073288712192000000
• The square root of 81042684800 is 284679.9690880973
• The cube root of 81042684800 is 4327.5086038083

Scales and comparisons

• 81,042,684,800 seconds is equal to 2,576 years, 47 weeks, 1 day, 53 minutes, 20 seconds.
• To count from 1 to 81,042,684,800 would take you about five thousand, one hundred fifty-three 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 81042684800 cubic inches would be around 360.6 feet tall.

Recreational maths with 81042684800

• 81042684800 backwards is 00848624018
• The number of decimal digits it has is: 11
• The sum of 81042684800's digits is 41
• More coming soon!