64438311665

Names of 64438311665

• Cardinal: 64438311665 can be written as Sixty-four billion, four hundred thirty-eight million, three hundred eleven thousand, six hundred sixty-five.

Scientific notation

• Scientific notation: 6.4438311665 × 10¹⁰

Factors of 64438311665

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 940

Divisors of 64438311665

• Number of divisors d(n): 144
• Complete list of divisors:
  1 5 7 13 31 35 49 61 65 91 155 169 217 245 305 403 427 455 637 793 823 845 1085 1183 1519 1891 2015 2135 2821 2989 3185 3965 4115 5239 5551 5761 5915 7595 8281 9455 10309 10699 13237 14105 14945 19747 24583 25513 26195 27755 28805 36673 38857 40327 41405 50203 51545 53495 66185 72163 74893 92659 98735 122915 127565 139087 172081 178591 183365 194285 201635 251015 256711 319579 331669 351421 360815 374465 463295 505141 524251 652639 695435 860405 892955 973609 1204567 1250137 1283555 1556293 1597895 1658345 1757105 2237053 2321683 2459947 2525705 2621255 3263195 4311697 4568473 4868045 6022835 6250685 6815263 7781465 8484307 10894051 11185265 11608415 12299735 15659371 16251781 20231809 21558485 22842365 30181879 31979311 34076315 42421535 54470255 59390149 76258357 78296855 81258905 101159045 141622663 150909395 159896555 211273153 263013517 296950745 381291785 415731043 708113315 991358641 1056365765 1315067585 1841094619 2078655215 4956793205 9205473095 12887662333 64438311665
• Sum of all divisors σ(n): 102316594176
• Sum of proper divisors (its aliquot sum) s(n): 37878282511
• 64438311665 is a deficient number, because the sum of its proper divisors (37878282511) is less than itself. Its deficiency is 26560029154

Bases of 64438311665

• Binary: 111100000000110100101001101011110001₂
• Hexadecimal: 0xF00D29AF1
• Base-36: TLOWNHT

Squares and roots of 64438311665

• 64438311665 squared (64438311665²) is 4152296010235675072225
• 64438311665 cubed (64438311665³) is 267566944432902460405705935004625
• The square root of 64438311665 is 253847.0241405245
• The cube root of 64438311665 is 4009.1107259341

Scales and comparisons

• 64,438,311,665 seconds is equal to 2,048 years, 48 weeks, 5 days, 19 hours, 1 minute, 5 seconds.
• To count from 1 to 64,438,311,665 would take you about four thousand and ninety-seven 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 64438311665 cubic inches would be around 334.1 feet tall.

Recreational maths with 64438311665

• 64438311665 backwards is 56611383446
• The number of decimal digits it has is: 11
• The sum of 64438311665's digits is 47
• More coming soon!