81968481360

Names of 81968481360

• Cardinal: 81968481360 can be written as Eighty-one billion, nine hundred sixty-eight million, four hundred eighty-one thousand, three hundred sixty.

Scientific notation

• Scientific notation: 8.196848136 × 10¹⁰

Factors of 81968481360

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 7793

Divisors of 81968481360

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 36 40 45 48 53 54 60 62 72 80 81 90 93 106 108 120 124 135 144 155 159 162 180 186 212 216 240 248 265 270 279 310 318 324 360 372 405 424 432 465 477 496 530 540 558 620 636 648 720 744 795 810 837 848 930 954 1060 1080 1116 1240 1272 1296 1395 1431 1488 1590 1620 1643 1674 1860 1908 2120 2160 2232 2385 2480 2511 2544 2790 2862 3180 3240 3286 3348 3720 3816 4185 4240 4293 4464 4770 4929 5022 5580 5724 6360 6480 6572 6696 7155 7440 7632 7699 8215 8370 8586 9540 9858 10044 11160 11448 12555 12720 13144 13392 14310 14787 15398 16430 16740 17172 19080 19716 20088 21465 22320 22896 23097 24645 25110 26288 28620 29574 30796 32860 33480 34344 38160 38495 39432 40176 42930 44361 46194 49290 50220 57240 59148 61592 65720 66960 68688 69291 73935 76990 78864 85860 88722 92388 98580 100440 114480 115485 118296 123184 131440 133083 138582 147870 153980 171720 177444 184776 197160 200880 207873 221805 230970 236592 238669 266166 277164 295740 307960 343440 346455 354888 369552 394320 408047 415746 443610 461940 477338 532332 554328 591480 615920 623619 665415 692910 709776 716007 816094 831492 887220 923880 954676 1039365 1064664 1108656 1182960 1193345 1224141 1247238 1330830 1385820 1432014 1632188 1662984 1774440 1847760 1909352 2040235 2078730 2129328 2148021 2386690 2448282 2494476 2661660 2771640 2864028 3118095 3264376 3325968 3548880 3580035 3672423 3818704 4080470 4157460 4296042 4773380 4896564 4988952 5323320 5543280 5728056 6120705 6236190 6444063 6528752 7160070 7344846 8160940 8314920 8592084 9546760 9793128 9977904 10646640 10740105 11017269 11456112 12241410 12472380 12649457 12888126 14320140 14689692 16321880 16629840 17184168 18362115 19093520 19332189 19586256 21480210 22034538 24482820 24944760 25298914 25776252 28640280 29379384 32220315 32643760 33051807 34368336 36724230 37948371 38664378 42960420 44069076 48965640 49889520 50597828 51552504 55086345 57280560 58758768 63247285 64440630 66103614 73448460 75896742 77328756 85920840 88138152 96660945 97931280 101195656 103105008 110172690 113845113 126494570 128881260 132207228 146896920 151793484 154657512 165259035 171841680 176276304 189741855 193321890 202391312 220345380 227690226 252989140 257762520 264414456 293793840 303586968 309315024 330518070 341535339 379483710 386643780 440690760 455380452 505978280 515525040 528828912 569225565 607173936 661036140 683070678 758967420 773287560 881381520 910760904 1011956560 1024606017 1138451130 1322072280 1366141356 1517934840 1546575120 1707676695 1821521808 2049212034 2276902260 2644144560 2732282712 3035869680 3415353390 4098424068 4553804520 5123030085 5464565424 6830706780 8196848136 9107609040 10246060170 13661413560 16393696272 20492120340 27322827120 40984240680 81968481360
• Sum of all divisors σ(n): 299455833600
• Sum of proper divisors (its aliquot sum) s(n): 217487352240
• 81968481360 is an abundant number, because the sum of its proper divisors (217487352240) is greater than itself. Its abundance is 135518870880

Bases of 81968481360

• Binary: 1001100010101101100111100010001010000₂
• Hexadecimal: 0x1315B3C450
• Base-36: 11NLX100

Squares and roots of 81968481360

• 81968481360 squared (81968481360²) is 6718831936464667449600
• 81968481360 cubed (81968481360³) is 550732450345076798141136339456000
• The square root of 81968481360 is 286301.3820434683
• The cube root of 81968481360 is 4343.9247796869

Scales and comparisons

• 81,968,481,360 seconds is equal to 2,606 years, 17 weeks, 6 days, 6 hours, 36 minutes.
• To count from 1 to 81,968,481,360 would take you about five thousand, two hundred twelve 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 81968481360 cubic inches would be around 362 feet tall.

Recreational maths with 81968481360

• 81968481360 backwards is 06318486918
• 81968481360 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81968481360's digits is 54
• More coming soon!