643722196329

Names of 643722196329

• Cardinal: 643722196329 can be written as Six hundred forty-three billion, seven hundred twenty-two million, one hundred ninety-six thousand, three hundred twenty-nine.

Scientific notation

• Scientific notation: 6.43722196329 × 10¹¹

Factors of 643722196329

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 615

Divisors of 643722196329

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 81 239 373 717 1119 2151 3357 6453 10071 19359 30213 57121 89147 139129 171363 267441 417387 514089 802323 1252161 1542267 2406969 3756483 4626801 7220907 11269449 21306133 33251831 63918399 99755493 191755197 299266479 575265591 897799437 1725796773 2693398311 7947187609 23841562827 71524688481 214574065443 643722196329
• Sum of all divisors σ(n): 968245821543
• Sum of proper divisors (its aliquot sum) s(n): 324523625214
• 643722196329 is a deficient number, because the sum of its proper divisors (324523625214) is less than itself. Its deficiency is 319198571115

Bases of 643722196329

• Binary: 1001010111100000110101010011010101101001₂
• Hexadecimal: 0x95E0D53569
• Base-36: 87PZKPK9

Squares and roots of 643722196329

• 643722196329 squared (643722196329²) is 414378266046631621076241
• 643722196329 cubed (643722196329³) is 266744487530540395051579543279319289
• 643722196329 is a perfect square number. Its square root is 802323
• The cube root of 643722196329 is 8634.4132028415

Scales and comparisons

• 643,722,196,329 seconds is equal to 20,468 years, 19 weeks, 3 days, 9 hours, 12 minutes, 9 seconds.
• To count from 1 to 643,722,196,329 would take you about forty thousand, nine hundred thirty-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 643722196329 cubic inches would be around 719.5 feet tall.

Recreational maths with 643722196329

• 643722196329 backwards is 923691227346
• The number of decimal digits it has is: 12
• The sum of 643722196329's digits is 54
• More coming soon!