64388743965

Names of 64388743965

• Cardinal: 64388743965 can be written as Sixty-four billion, three hundred eighty-eight million, seven hundred forty-three thousand, nine hundred sixty-five.

Scientific notation

• Scientific notation: 6.4388743965 × 10¹⁰

Factors of 64388743965

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 44825

Divisors of 64388743965

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 5 7 9 13 15 21 27 35 39 45 63 65 81 91 105 117 135 169 189 195 243 273 315 351 405 455 507 567 585 819 845 945 1053 1183 1215 1365 1521 1701 1755 2457 2535 2835 3159 3549 4095 4563 5265 5915 7371 7605 8505 10647 12285 13689 15795 17745 22113 22815 31941 36855 41067 44797 53235 68445 95823 110565 134391 159705 205335 223985 287469 313579 403173 479115 582361 671955 940737 1209519 1437345 1567895 1747083 2015865 2822211 2911805 3628557 4076527 4703685 5241249 6047595 7570693 8466633 8735415 10885671 12229581 14111055 15723747 18142785 20382635 22712079 25399899 26206245 36688743 37853465 42333165 47171241 52994851 54428355 61147905 68136237 76199697 78618735 110066229 113560395 126999495 141513723 158984553 183443715 204408711 235856205 264974255 330198687 340681185 380998485 476953659 550331145 613226133 707568615 794922765 990596061 1022043555 1430860977 1650993435 1839678399 2384768295 3066130665 4292582931 4952980305 7154304885 9198391995 12877748793 21462914655 64388743965
• Sum of all divisors σ(n): 143236050048
• Sum of proper divisors (its aliquot sum) s(n): 78847306083
• 64388743965 is an abundant number, because the sum of its proper divisors (78847306083) is greater than itself. Its abundance is 14458562118

Bases of 64388743965

• Binary: 111011111101110111100100001100011101₂
• Hexadecimal: 0xEFDDE431D
• Base-36: TKVE8T9

Squares and roots of 64388743965

• 64388743965 squared (64388743965²) is 4145910349390323921225
• 64388743965 cubed (64388743965³) is 266949959988737260812171354157125
• The square root of 64388743965 is 253749.3723440513
• The cube root of 64388743965 is 4008.0824899431

Scales and comparisons

• 64,388,743,965 seconds is equal to 2,047 years, 18 weeks, 6 days, 2 hours, 12 minutes, 45 seconds.
• To count from 1 to 64,388,743,965 would take you about four thousand and ninety-four 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 64388743965 cubic inches would be around 334 feet tall.

Recreational maths with 64388743965

• 64388743965 backwards is 56934788346
• 64388743965 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 64388743965's digits is 63
• More coming soon!