81437916105

Names of 81437916105

• Cardinal: 81437916105 can be written as Eighty-one billion, four hundred thirty-seven million, nine hundred sixteen thousand, one hundred five.

Scientific notation

• Scientific notation: 8.1437916105 × 10¹⁰

Factors of 81437916105

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1195

Divisors of 81437916105

• Number of divisors d(n): 256
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 61 63 65 91 105 109 117 135 183 189 195 273 305 315 327 351 427 455 545 549 585 763 793 819 915 945 981 997 1281 1365 1417 1635 1647 1755 2135 2289 2379 2457 2745 2943 2991 3815 3843 3965 4095 4251 4905 4985 5551 6405 6649 6867 6979 7085 7137 8235 8973 9919 11445 11529 11895 12285 12753 12961 14715 14955 16653 19215 19947 20601 20937 21255 21411 26919 27755 29757 33245 34335 34895 35685 38259 38883 44865 46543 49595 49959 57645 59841 60817 62811 63765 64805 83265 86437 89271 90727 99735 103005 104685 107055 108673 116649 134595 139629 148785 149877 179523 182451 188433 191295 194415 232715 249795 259311 267813 272181 299205 304085 314055 326019 349947 418887 425719 432185 446355 453635 543365 547353 583245 605059 698145 749385 760711 777933 790621 816543 897615 912255 942165 978057 1256661 1277157 1296555 1339065 1360905 1412749 1630095 1642059 1749735 1815177 2094435 2128595 2282133 2333799 2371863 2449629 2736765 2934171 3025295 3803555 3831471 3889665 3953105 4082715 4238247 4890285 5445531 5534347 6283305 6385785 6629053 6846399 7063745 7115589 8210295 9075885 9889243 11410665 11494413 11668995 11859315 12248145 12714741 14670855 16336593 16603041 19157355 19887159 20539197 21191235 21346767 27227655 27671735 29667729 33145265 34231995 35577945 38144223 46403371 49446215 49809123 57472065 59661477 63573705 81682965 83015205 86177689 89003187 99435795 102695985 106733835 139210113 148338645 149427369 178984431 190721115 232016855 249045615 258533067 267009561 298307385 417630339 430888445 445015935 603243823 696050565 747136845 775599201 894922155 1252891017 1292665335 1335047805 1809731469 2088151695 2326797603 3016219115 3877996005 5429194407 6264455085 9048657345 11633988015 16287583221 27145972035 81437916105
• Sum of all divisors σ(n): 182954956800
• Sum of proper divisors (its aliquot sum) s(n): 101517040695
• 81437916105 is an abundant number, because the sum of its proper divisors (101517040695) is greater than itself. Its abundance is 20079124590

Bases of 81437916105

• Binary: 1001011110110000100111111101111001001₂
• Hexadecimal: 0x12F613FBC9
• Base-36: 11EU1689

Squares and roots of 81437916105

• 81437916105 squared (81437916105²) is 6632134179525018371025
• 81437916105 cubed (81437916105³) is 540107186909261454848117712857625
• The square root of 81437916105 is 285373.2925573099
• The cube root of 81437916105 is 4334.5320384213

Scales and comparisons

• 81,437,916,105 seconds is equal to 2,589 years, 24 weeks, 4 days, 11 hours, 21 minutes, 45 seconds.
• To count from 1 to 81,437,916,105 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 81437916105 cubic inches would be around 361.2 feet tall.

Recreational maths with 81437916105

• 81437916105 backwards is 50161973418
• 81437916105 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81437916105's digits is 45
• More coming soon!