63935674679 has 4 divisors (see below), whose sum is σ = 63938892576. Its totient is φ = 63932456784.

The previous prime is 63935674669. The next prime is 63935674757. The reversal of 63935674679 is 97647653936.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63935674679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63935674609) 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 3 ways as a sum of consecutive naturals, for example, 1578959 + ... + 1618944.

It is an arithmetic number, because the mean of its divisors is an integer number (15984723144).

Almost surely, 2^63935674679 is an apocalyptic number.

63935674679 is a deficient number, since it is larger than the sum of its proper divisors (3217897).

63935674679 is a wasteful number, since it uses less digits than its factorization.

63935674679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217896.

The product of its digits is 154314720, while the sum is 65.

The spelling of 63935674679 in words is "sixty-three billion, nine hundred thirty-five million, six hundred seventy-four thousand, six hundred seventy-nine".