64420397568

Names of 64420397568

• Cardinal: 64420397568 can be written as Sixty-four billion, four hundred twenty million, three hundred ninety-seven thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 6.4420397568 × 10¹⁰

Factors of 64420397568

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3744

Divisors of 64420397568

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 256 288 384 512 576 768 1152 1536 2304 3739 4608 7478 11217 14956 22434 29912 33651 44868 59824 67302 89736 119648 134604 179472 239296 269208 358944 478592 538416 717888 957184 1076832 1435776 1914368 2153664 2871552 4307328 5743104 8614656 13980121 17229312 27960242 41940363 55920484 83880726 111840968 125821089 167761452 223681936 251642178 335522904 447363872 503284356 671045808 894727744 1006568712 1342091616 1789455488 2013137424 2684183232 3578910976 4026274848 5368366464 7157821952 8052549696 10736732928 16105099392 21473465856 32210198784 64420397568
• Sum of all divisors σ(n): 185971367439
• Sum of proper divisors (its aliquot sum) s(n): 121550969871
• 64420397568 is an abundant number, because the sum of its proper divisors (121550969871) is greater than itself. Its abundance is 57130572303

Bases of 64420397568

• Binary: 111011111111110000010100001000000000₂
• Hexadecimal: 0xEFFC14200
• Base-36: TLE8OW0

Squares and roots of 64420397568

• 64420397568 squared (64420397568²) is 4149987622819180314624
• 64420397568 cubed (64420397568³) is 267343852564290824843957404434432
• The square root of 64420397568 is 253811.7364662241
• The cube root of 64420397568 is 4008.7391754647

Scales and comparisons

• 64,420,397,568 seconds is equal to 2,048 years, 19 weeks, 1 day, 10 hours, 52 minutes, 48 seconds.
• To count from 1 to 64,420,397,568 would take you about four thousand and ninety-six 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 64420397568 cubic inches would be around 334.1 feet tall.

Recreational maths with 64420397568

• 64420397568 backwards is 86579302446
• The number of decimal digits it has is: 11
• The sum of 64420397568's digits is 54
• More coming soon!