81436199040

Names of 81436199040

• Cardinal: 81436199040 can be written as Eighty-one billion, four hundred thirty-six million, one hundred ninety-nine thousand and forty.

Scientific notation

• Scientific notation: 8.143619904 × 10¹⁰

Factors of 81436199040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 11487

Divisors of 81436199040

• Number of divisors d(n): 512
• 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 32 35 36 40 42 45 48 54 56 59 60 63 64 70 72 80 84 90 96 105 108 112 118 120 126 128 135 140 144 160 168 177 180 189 192 210 216 224 236 240 252 270 280 288 295 315 320 336 354 360 378 384 413 420 432 448 472 480 504 531 540 560 576 590 630 640 672 708 720 756 826 840 864 885 896 944 945 960 1008 1062 1080 1120 1152 1180 1239 1260 1344 1416 1440 1512 1593 1652 1680 1728 1770 1888 1890 1920 2016 2065 2124 2160 2240 2360 2478 2520 2655 2688 2832 2880 3024 3186 3304 3360 3456 3540 3717 3776 3780 4032 4130 4248 4320 4480 4720 4956 5040 5310 5664 5760 6048 6195 6372 6608 6720 7080 7434 7552 7560 7965 8064 8260 8496 8640 9440 9912 10080 10620 11151 11328 11411 12096 12390 12744 13216 13440 14160 14868 15120 15930 16520 16992 17280 18585 18880 19824 20160 21240 22302 22656 22822 24192 24780 25488 26432 28320 29736 30240 31860 33040 33984 34233 37170 37760 39648 40320 42480 44604 45644 49560 50976 52864 55755 56640 57055 59472 60480 63720 66080 67968 68466 74340 79296 79877 84960 89208 91288 99120 101952 102699 111510 113280 114110 118944 120960 127440 132160 136932 148680 158592 159754 169920 171165 178416 182576 198240 203904 205398 223020 228220 237888 239631 254880 264320 273864 297360 308097 319508 339840 342330 356832 365152 396480 399385 410796 446040 456440 475776 479262 509760 513495 547728 594720 616194 639016 673249 684660 713664 718893 730304 792960 798770 821592 892080 912880 958524 1019520 1026990 1095456 1189440 1198155 1232388 1278032 1346498 1369320 1427328 1437786 1460608 1540485 1597540 1643184 1784160 1825760 1917048 2019747 2053980 2156679 2190912 2378880 2396310 2464776 2556064 2692996 2738640 2875572 3080970 3195080 3286368 3366245 3568320 3594465 3651520 3834096 4039494 4107960 4313358 4381824 4712743 4792620 4929552 5112128 5385992 5477280 5751144 6059241 6161940 6390160 6572736 6732490 7136640 7188930 7303040 7668192 8078988 8215920 8626716 9425486 9585240 9859104 10098735 10224256 10771984 10783395 10954560 11502288 12118482 12323880 12780320 13145472 13464980 14138229 14377860 15336384 16157976 16431840 17253432 18177723 18850972 19170480 19718208 20197470 21543968 21566790 21909120 23004576 23563715 24236964 24647760 25560640 26929960 28276458 28755720 30296205 30672768 32315952 32863680 34506864 36355446 37701944 38340960 39436416 40394940 42414687 43087936 43133580 46009152 47127430 48473928 49295520 51121280 53859920 56552916 57511440 60592410 64631904 65727360 69013728 70691145 72710892 75403888 76681920 80789880 84829374 86175872 86267160 90888615 92018304 94254860 96947856 98591040 107719840 113105832 115022880 121184820 127244061 129263808 138027456 141382290 145421784 150807776 153363840 161579760 169658748 172534320 181777230 188509720 193895712 197182080 212073435 215439680 226211664 230045760 242369640 254488122 258527616 276054912 282764580 290843568 301615552 323159520 339317496 345068640 363554460 377019440 387791424 424146870 430879360 452423328 460091520 484739280 508976244 565529160 581687136 603231104 636220305 646319040 678634992 690137280 727108920 754038880 775582848 848293740 904846656 969478560 1017952488 1131058320 1163374272 1272440610 1292638080 1357269984 1380274560 1454217840 1508077760 1696587480 1809693312 1938957120 2035904976 2262116640 2326748544 2544881220 2714539968 2908435680 3016155520 3393174960 3877914240 4071809952 4524233280 5089762440 5429079936 5816871360 6786349920 8143619904 9048466560 10179524880 11633742720 13572699840 16287239808 20359049760 27145399680 40718099520 81436199040
• Sum of all divisors σ(n): 335238912000
• Sum of proper divisors (its aliquot sum) s(n): 253802712960
• 81436199040 is an abundant number, because the sum of its proper divisors (253802712960) is greater than itself. Its abundance is 172366513920

Bases of 81436199040

• Binary: 1001011110101111110011100100010000000₂
• Hexadecimal: 0x12F5F9C880
• Base-36: 11ET0DC0

Squares and roots of 81436199040

• 81436199040 squared (81436199040²) is 6631854514082496921600
• 81436199040 cubed (81436199040³) is 540073024213144702287604875264000
• The square root of 81436199040 is 285370.2840871839
• The cube root of 81436199040 is 4334.5015746197

Scales and comparisons

• 81,436,199,040 seconds is equal to 2,589 years, 21 weeks, 5 days, 14 hours, 24 minutes.
• To count from 1 to 81,436,199,040 would take you about five thousand, one hundred seventy-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 81436199040 cubic inches would be around 361.2 feet tall.

Recreational maths with 81436199040

• 81436199040 backwards is 04099163418
• 81436199040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81436199040's digits is 45
• More coming soon!