18678608375 has 16 divisors (see below), whose sum is σ = 26641033536. Its totient is φ = 12808188000.

The previous prime is 18678608357. The next prime is 18678608383. The reversal of 18678608375 is 57380687681.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18678608375 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10672616 + ... + 10674365.

It is an arithmetic number, because the mean of its divisors is an integer number (1665064596).

Almost surely, 2^18678608375 is an apocalyptic number.

18678608375 is a deficient number, since it is larger than the sum of its proper divisors (7962425161).

18678608375 is an equidigital number, since it uses as much as digits as its factorization.

18678608375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21347003 (or 21346993 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 18678608375 in words is "eighteen billion, six hundred seventy-eight million, six hundred eight thousand, three hundred seventy-five".