63966719223 has 20 divisors (see below), whose sum is σ = 104242062408. Its totient is φ = 38767708080.

The previous prime is 63966719177. The next prime is 63966719233. The reversal of 63966719223 is 32291766936.

63966719223 is a `hidden beast` number, since 6 + 396 + 67 + 192 + 2 + 3 = 666.

It is not a de Polignac number, because 63966719223 - 2¹⁰ = 63966718199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63966719223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63966719233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35895136 + ... + 35896917.

Almost surely, 2^63966719223 is an apocalyptic number.

63966719223 is a deficient number, since it is larger than the sum of its proper divisors (40275343185).

63966719223 is a wasteful number, since it uses less digits than its factorization.

63966719223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71792076 (or 71792067 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The spelling of 63966719223 in words is "sixty-three billion, nine hundred sixty-six million, seven hundred nineteen thousand, two hundred twenty-three".