643653317021

Names of 643653317021

• Cardinal: 643653317021 can be written as Six hundred forty-three billion, six hundred fifty-three million, three hundred seventeen thousand and twenty-one.

Scientific notation

• Scientific notation: 6.43653317021 × 10¹¹

Factors of 643653317021

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 246

Divisors of 643653317021

• Number of divisors d(n): 96
• Complete list of divisors:
  1 11 13 23 121 143 169 199 253 299 529 1573 1859 2189 2197 2587 2783 3289 3887 4577 5819 6877 12167 20449 24079 24167 28457 33631 36179 42757 50347 50531 59501 64009 75647 89401 105271 133837 158171 265837 313027 369941 437203 470327 553817 555841 654511 773513 832117 983411 1157981 1162213 1368523 1472207 1739881 2056223 2421233 4069351 4809233 6114251 7199621 8508643 10055669 10817521 12737791 12784343 15053753 17790799 19138691 22618453 26633563 26730899 31476029 52901563 93595073 110612359 140627773 165591283 195698789 231280387 248802983 292969193 294039889 346236319 409188377 1216735949 2152686679 2544084257 3234438779 3808599509 4501072147 5319448901 27984926827 49511793617 58513937911 643653317021
• Sum of all divisors σ(n): 805277760000
• Sum of proper divisors (its aliquot sum) s(n): 161624442979
• 643653317021 is a deficient number, because the sum of its proper divisors (161624442979) is less than itself. Its deficiency is 482028874042

Bases of 643653317021

• Binary: 1001010111011100101110100011000110011101₂
• Hexadecimal: 0x95DCBA319D
• Base-36: 87OUKDY5

Squares and roots of 643653317021

• 643653317021 squared (643653317021²) is 414289592512135928314441
• 643653317021 cubed (643653317021³) is 266658870427714734457219023145400261
• The square root of 643653317021 is 802280.0739274285
• The cube root of 643653317021 is 8634.1052265005

Scales and comparisons

• 643,653,317,021 seconds is equal to 20,466 years, 9 weeks, 4 days, 4 hours, 3 minutes, 41 seconds.
• To count from 1 to 643,653,317,021 would take you about forty thousand, nine hundred thirty-two 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 643653317021 cubic inches would be around 719.5 feet tall.

Recreational maths with 643653317021

• 643653317021 backwards is 120713356346
• The number of decimal digits it has is: 12
• The sum of 643653317021's digits is 41
• More coming soon!