81655476740964

Names of 81655476740964

• Cardinal: 81655476740964 can be written as Eighty-one trillion, six hundred fifty-five billion, four hundred seventy-six million, seven hundred forty thousand, nine hundred sixty-four.

Scientific notation

• Scientific notation: 8.1655476740964 × 10¹³

Factors of 81655476740964

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2514

Divisors of 81655476740964

• Number of divisors d(n): 405
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 29 36 42 49 54 58 63 81 84 87 98 108 116 126 147 162 174 189 196 203 252 261 294 324 348 378 406 441 522 567 588 609 756 783 812 841 882 1044 1134 1218 1323 1421 1566 1682 1764 1827 2268 2349 2436 2473 2523 2646 2842 3132 3364 3654 3969 4263 4698 4946 5046 5292 5481 5684 5887 7308 7419 7569 7938 8526 9396 9892 10092 10962 11774 12789 14838 15138 15876 16443 17052 17311 17661 21924 22257 22707 23548 25578 29676 30276 32886 34622 35322 38367 41209 44514 45414 51156 51933 52983 65772 66771 68121 69244 70644 71717 76734 82418 89028 90828 103866 105966 115101 121177 123627 133542 136242 143434 153468 155799 158949 164836 200313 207732 211932 215151 230202 242354 247254 267084 272484 286868 311598 317898 363531 370881 400626 430302 460404 467397 476847 484708 494508 502019 623196 635796 645453 727062 741762 801252 860604 934794 953694 1004038 1090593 1112643 1290906 1402191 1454124 1483524 1506057 1869588 1907388 1936359 2008076 2079793 2181186 2225286 2581812 2804382 3012114 3271779 3337929 3514133 3872718 4159586 4362372 4450572 4518171 5608764 5809077 6024228 6115729 6239379 6543558 6675858 7028266 7745436 8319172 9036342 9815337 10542399 11618154 12231458 12478758 13087116 13351716 13554513 14056532 14558551 18072684 18347187 18718137 19630674 21084798 23236308 24462916 24957516 27109026 29117102 31627197 36694374 37436274 39261348 40663539 42169596 42810103 43675653 54218052 55041561 56154411 58234204 63254394 73388748 74872548 81327078 85620206 87351306 94881591 101909857 110083122 112308822 126508788 128430309 131026959 162654156 165124683 168463233 171240412 174702612 177356141 189763182 203819714 220166244 224617644 256860618 262053918 284644773 299670721 305729571 330249366 336926466 354712282 379526364 385290927 393080877 407639428 495374049 513721236 524107836 532068423 569289546 599341442 611459142 660498732 673852932 709424564 770581854 786161754 899012163 917188713 990748098 1064136846 1138579092 1155872781 1179242631 1198682884 1222918284 1241492987 1541163708 1572323508 1596205269 1798024326 1834377426 1981496196 2128273692 2311745562 2358485262 2482985974 2697036489 2751566139 3192410538 3467618343 3596048652 3668754852 3724478961 4623491124 4716970524 4788615807 4965971948 5143328089 5394072978 5503132278 6384821076 6935236686 7448957922 8091109467 8254698417 8690450909 9577231614 10286656178 10788145956 11006264556 11173436883 13870473372 14365847421 14897915844 15429984267 16182218934 16509396834 17380901818 19154463228 20573312356 22346873766 24273328401 26071352727 28731694842 30859968534 32364437868 33018793668 33520310649 34761803636 36003296623 44693747532 46289952801 48546656802 52142705454 57463389684 61719937068 67040621298 72006593246 78214058181 92579905602 97093313604 100560931947 104285410908 108009889869 134081242596 138869858403 144013186492 156428116362 185159811204 201121863894 216019779738 234642174543 252023076361 277739716806 312856232724 324029669607 402243727788 416609575209 432039559476 469284349086 504046152722 555479433612 648059339214 703926523629 756069229083 833219150418 938568698172 972089008821 1008092305444 1296118678428 1407853047258 1512138458166 1666438300836 1944178017642 2268207687249 2815706094516 2916267026463 3024276916332 3888356035284 4536415374498 5832534052926 6804623061747 9072830748996 11665068105852 13609246123494 20413869185241 27218492246988 40827738370482 81655476740964
• Sum of all divisors σ(n): 257276609416827
• Sum of proper divisors (its aliquot sum) s(n): 175621132675863
• 81655476740964 is an abundant number, because the sum of its proper divisors (175621132675863) is greater than itself. Its abundance is 93965655934899

Bases of 81655476740964

• Binary: 10010100100001111100101101011110110001101100100₂
• Hexadecimal: 0x4A43E5AF6364
• Base-36: SY00AKI90

Squares and roots of 81655476740964

• 81655476740964 squared (81655476740964²) is 6667616881794112786755649296
• 81655476740964 cubed (81655476740964³) is 544447435208998088801912025879557820961344
• 81655476740964 is a perfect square number. Its square root is 9036342
• The cube root of 81655476740964 is 43383.8849364721

Scales and comparisons

• 81,655,476,740,964 seconds is equal to 2,596,391 years, 30 weeks, 2 days, 8 hours, 29 minutes, 24 seconds.
• To count from 1 to 81,655,476,740,964 would take you about six million, four hundred ninety thousand, nine 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 81655476740964 cubic inches would be around 3615.3 feet tall.

Recreational maths with 81655476740964

• 81655476740964 backwards is 46904767455618
• The number of decimal digits it has is: 14
• The sum of 81655476740964's digits is 72
• More coming soon!