23904716687 has 4 divisors (see below), whose sum is σ = 23934710856. Its totient is φ = 23874722520.

The previous prime is 23904716611. The next prime is 23904716699. The reversal of 23904716687 is 78661740932.

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-23904716687 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 (23904716287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14995889 + ... + 14997482.

It is an arithmetic number, because the mean of its divisors is an integer number (5983677714).

Almost surely, 2^23904716687 is an apocalyptic number.

23904716687 is a deficient number, since it is larger than the sum of its proper divisors (29994169).

23904716687 is an equidigital number, since it uses as much as digits as its factorization.

23904716687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29994168.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 23904716687 in words is "twenty-three billion, nine hundred four million, seven hundred sixteen thousand, six hundred eighty-seven".