51491691439461

Names of 51491691439461

• Cardinal: 51491691439461 can be written as Fifty-one trillion, four hundred ninety-one billion, six hundred ninety-one million, four hundred thirty-nine thousand, four hundred sixty-one.

Scientific notation

• Scientific notation: 5.1491691439461 × 10¹³

Factors of 51491691439461

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 263846

Divisors of 51491691439461

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 73 91 117 189 219 273 351 511 657 819 949 1093 1533 1971 2457 2847 3279 4599 6643 7651 8541 9837 13797 14209 19929 22953 25623 29511 42627 59787 68859 79789 99463 127881 179361 206577 239367 262657 298389 383643 558523 718101 787971 895167 1037257 1675569 1838599 2154303 2363913 2685501 3111771 3414541 5026707 5515797 7091739 7260799 9335313 10243623 15080121 16547391 19173961 21782397 23901787 28005939 30730869 49642173 57521883 65347191 71705361 92192607 134217727 172565649 196041573 215116083 249261493 287084101 402653181 517696947 645348249 747784479 861252303 1207959543 1744830451 2009588707 2243353437 2583756909 3623878629 3732093313 5234491353 6028766121 6730060311 7751270727 11196279939 15703474059 18086298363 20957139373 26124653191 33588839817 47110422177 54258895089 62871418119 78373959573 100766519451 146699975611 188614254357 235121878719 272442811849 440099926833 565842763071 705365636157 817328435547 1320299780499 1907099682943 2451985306641 3960899341497 5721299048829 7355955919923 17163897146487 51491691439461
• Sum of all divisors σ(n): 95261559895040
• Sum of proper divisors (its aliquot sum) s(n): 43769868455579
• 51491691439461 is a deficient number, because the sum of its proper divisors (43769868455579) is less than itself. Its deficiency is 7721822983882

Bases of 51491691439461

• Binary: 1011101101010011010111111110100010010101100101₂
• Hexadecimal: 0x2ED4D7FA2565
• Base-36: I92YFLUN9

Squares and roots of 51491691439461

• 51491691439461 squared (51491691439461²) is 2651394287296661230227970521
• 51491691439461 cubed (51491691439461³) is 136524776525829290288256558521655164129181
• The square root of 51491691439461 is 7175771.1390108451
• The cube root of 51491691439461 is 37203.0934143415

Scales and comparisons

• 51,491,691,439,461 seconds is equal to 1,637,276 years, 26 weeks, 4 days, 22 hours, 4 minutes, 21 seconds.
• To count from 1 to 51,491,691,439,461 would take you about four million, ninety-three thousand, one hundred ninety-one 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 51491691439461 cubic inches would be around 3100.3 feet tall.

Recreational maths with 51491691439461

• 51491691439461 backwards is 16493419619415
• 51491691439461 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 51491691439461's digits is 63
• More coming soon!