81243148800

Names of 81243148800

• Cardinal: 81243148800 can be written as Eighty-one billion, two hundred forty-three million, one hundred forty-eight thousand, eight hundred.

Scientific notation

• Scientific notation: 8.12431488 × 10¹⁰

Factors of 81243148800

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 284

Divisors of 81243148800

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 19 20 22 24 25 30 32 33 38 40 44 48 50 53 55 57 60 64 66 75 76 80 88 95 96 100 106 110 114 120 128 132 150 152 159 160 165 176 190 191 192 200 209 212 220 228 240 256 264 265 275 285 300 304 318 320 330 352 380 382 384 400 418 424 440 456 475 480 512 528 530 550 570 573 583 600 608 627 636 640 660 704 760 764 768 795 800 825 836 848 880 912 950 955 960 1007 1045 1056 1060 1100 1140 1146 1166 1200 1216 1254 1272 1280 1320 1325 1408 1425 1520 1528 1536 1590 1600 1650 1672 1696 1749 1760 1824 1900 1910 1920 2014 2090 2101 2112 2120 2200 2280 2292 2332 2400 2432 2508 2544 2560 2640 2650 2816 2850 2865 2915 3021 3040 3056 3135 3180 3200 3300 3344 3392 3498 3520 3629 3648 3800 3820 3840 3975 4028 4180 4202 4224 4240 4400 4560 4584 4664 4775 4800 4864 5016 5035 5088 5225 5280 5300 5632 5700 5730 5830 6042 6080 6112 6270 6303 6360 6400 6600 6688 6784 6996 7040 7258 7296 7600 7640 7680 7950 8056 8360 8404 8448 8480 8745 8800 9120 9168 9328 9550 9600 9728 10032 10070 10123 10176 10450 10505 10560 10600 10887 11077 11400 11460 11660 12084 12160 12224 12540 12606 12720 12800 13200 13376 13568 13992 14080 14325 14516 14575 14592 15105 15200 15280 15675 15900 16112 16720 16808 16896 16960 17490 17600 18145 18240 18336 18656 19100 19200 20064 20140 20246 20352 20900 21010 21120 21200 21774 22154 22800 22920 23320 24168 24320 24448 25080 25175 25212 25440 26400 26752 27136 27984 28160 28650 29032 29150 29184 30210 30369 30400 30560 31350 31515 31800 32224 33231 33440 33616 33920 34980 35200 36290 36480 36672 37312 38200 38400 39919 40128 40280 40492 40704 41800 42020 42240 42400 43548 43725 44308 45600 45840 46640 48336 48640 48896 50160 50350 50424 50615 50880 52525 52800 53504 54435 55385 55968 57300 58064 58300 60420 60738 60800 61120 62700 63030 63600 64448 66462 66880 67232 67840 69960 70400 72580 72960 73344 74624 75525 76400 79838 80256 80560 80984 81408 83600 84040 84480 84800 87096 87450 88616 90725 91200 91680 93280 96672 97792 100320 100700 100848 101230 101760 105050 105600 107008 108870 110770 111353 111936 114600 116128 116600 119757 120840 121476 121600 122240 125400 126060 127200 128896 132924 133760 134464 135680 139920 140800 145160 145920 146688 149248 151050 151845 152800 157575 159676 160512 161120 161968 166155 167200 168080 169600 174192 174900 177232 181450 182400 183360 186560 192337 193344 199595 200640 201400 201696 202460 203520 210100 211200 217740 221540 222706 223872 229200 232256 233200 239514 241680 242952 243200 244480 250800 252120 253075 254400 257792 265848 267520 268928 272175 276925 279840 290320 293376 298496 302100 303690 305600 315150 319352 321024 322240 323936 332310 334059 334400 336160 339200 348384 349800 354464 362900 364800 366720 373120 384674 386688 399190 401280 402800 403392 404920 407040 420200 422400 435480 443080 445412 447744 458400 464512 466400 479028 483360 485904 488960 501600 504240 506150 508800 515584 531696 535040 537856 544350 553850 556765 559680 577011 580640 598785 604200 607380 611200 630300 638704 644480 647872 664620 668118 668800 672320 678400 696768 699600 708928 725800 729600 733440 746240 759225 769348 773376 798380 802560 805600 806784 809840 830775 840400 870960 886160 890824 895488 916800 929024 932800 958056 961685 966720 971808 997975 1003200 1008480 1012300 1017600 1063392 1075712 1088700 1107700 1113530 1119360 1154022 1161280 1197570 1208400 1214760 1222400 1260600 1277408 1288960 1295744 1329240 1336236 1337600 1344640 1393536 1399200 1417856 1451600 1466880 1492480 1518450 1538696 1546752 1596760 1605120 1611200 1613568 1619680 1661550 1670295 1680800 1741920 1772320 1781648 1833600 1858048 1865600 1916112 1923370 1933440 1943616 1995950 2006400 2016960 2024600 2035200 2115707 2126784 2177400 2215400 2227060 2238720 2308044 2322560 2395140 2416800 2429520 2444800 2521200 2554816 2577920 2591488 2658480 2672472 2675200 2689280 2783825 2787072 2798400 2835712 2885055 2903200 2993925 3036900 3077392 3193520 3222400 3227136 3239360 3323100 3340590 3361600 3483840 3544640 3563296 3667200 3731200 3832224 3846740 3866880 3887232 3991900 4012800 4033920 4049200 4231414 4253568 4354800 4430800 4454120 4477440 4616088 4645120 4790280 4808425 4833600 4859040 5042400 5109632 5182976 5316960 5344944 5378560 5567650 5574144 5596800 5671424 5770110 5806400 5987850 6073800 6154784 6347121 6387040 6444800 6478720 6646200 6681180 6723200 6967680 7089280 7126592 7334400 7462400 7664448 7693480 7733760 7774464 7983800 8025600 8067840 8098400 8351475 8462828 8507136 8709600 8861600 8908240 9232176 9290240 9580560 9616850 9667200 9718080 10084800 10219264 10578535 10633920 10689888 11135300 11193600 11540220 11612800 11975700 12147600 12309568 12694242 12774080 12889600 12957440 13292400 13362360 13446400 13935360 14178560 14253184 14425275 15328896 15386960 15548928 15967600 16135680 16196800 16702950 16925656 17014272 17419200 17723200 17816480 18464352 19161120 19233700 19334400 19436160 20169600 20438528 21157070 21267840 21379776 22270600 22387200 23080440 23225600 23951400 24295200 24619136 25388484 25548160 25914880 26584800 26724720 26892800 27870720 28357120 28506368 28850550 30657792 30773920 31735605 31935200 32393600 33405900 33851312 34838400 35446400 35632960 36928704 38322240 38467400 38668800 38872320 40339200 42314140 42535680 42759552 44541200 46160880 46451200 47902800 48590400 49238272 50776968 51096320 52892675 53169600 53449440 57012736 57701100 61315584 61547840 63471210 63870400 64787200 66811800 67702624 69676800 70892800 71265920 73857408 76644480 76934800 77744640 80678400 84628280 85071360 85519104 89082400 92321760 95805600 97180800 98476544 101553936 102192640 105785350 106339200 106898880 115402200 123095680 126942420 127740800 129574400 133623600 135405248 139353600 141785600 142531840 147714816 153288960 153869600 158678025 169256560 171038208 178164800 184643520 191611200 194361600 203107872 211570700 212678400 213797760 230804400 246191360 253884840 255481600 267247200 270810496 285063680 295429632 306577920 307739200 317356050 338513120 356329600 369287040 383222400 388723200 406215744 423141400 425356800 427595520 461608800 492382720 507769680 510963200 534494400 541620992 615478400 634712100 677026240 712659200 738574080 766444800 812431488 846282800 855191040 923217600 1015539360 1068988800 1083241984 1230956800 1269424200 1354052480 1425318400 1477148160 1532889600 1624862976 1692565600 1846435200 2031078720 2137977600 2461913600 2538848400 2708104960 3249725952 3385131200 3692870400 4062157440 4275955200 5077696800 5416209920 6770262400 7385740800 8124314880 10155393600 13540524800 16248629760 20310787200 27081049600 40621574400 81243148800
• Sum of all divisors σ(n): 315648368640
• Sum of proper divisors (its aliquot sum) s(n): 234405219840
• 81243148800 is an abundant number, because the sum of its proper divisors (234405219840) is greater than itself. Its abundance is 153162071040

Bases of 81243148800

• Binary: 1001011101010011110000001001000000000₂
• Hexadecimal: 0x12EA781200
• Base-36: 11BM2MTC

Squares and roots of 81243148800

• 81243148800 squared (81243148800²) is 6600449226938941440000
• 81243148800 cubed (81243148800³) is 536241278691045387924406272000000
• The square root of 81243148800 is 285031.8382216275
• The cube root of 81243148800 is 4331.0737842597

Scales and comparisons

• 81,243,148,800 seconds is equal to 2,583 years, 14 weeks, 4 days, 5 hours, 20 minutes.
• To count from 1 to 81,243,148,800 would take you about five thousand, one hundred sixty-six 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 81243148800 cubic inches would be around 360.9 feet tall.

Recreational maths with 81243148800

• 81243148800 backwards is 00884134218
• The number of decimal digits it has is: 11
• The sum of 81243148800's digits is 39
• More coming soon!