23664377679 has 4 divisors (see below), whose sum is σ = 31552503576. Its totient is φ = 15776251784.

The previous prime is 23664377629. The next prime is 23664377699. The reversal of 23664377679 is 97677346632.

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

It is a cyclic number.

It is not a de Polignac number, because 23664377679 - 2¹⁵ = 23664344911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23664377629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944062944 + ... + 3944062949.

It is an arithmetic number, because the mean of its divisors is an integer number (7888125894).

Almost surely, 2^23664377679 is an apocalyptic number.

23664377679 is a deficient number, since it is larger than the sum of its proper divisors (7888125897).

23664377679 is an equidigital number, since it uses as much as digits as its factorization.

23664377679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888125896.

The product of its digits is 48009024, while the sum is 60.

The spelling of 23664377679 in words is "twenty-three billion, six hundred sixty-four million, three hundred seventy-seven thousand, six hundred seventy-nine".