18675612056 has 32 divisors (see below), whose sum is σ = 35787502080. Its totient is φ = 9132564000.

The previous prime is 18675612049. The next prime is 18675612061. The reversal of 18675612056 is 65021657681.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 18675612056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528461 + ... + 562691.

It is an arithmetic number, because the mean of its divisors is an integer number (1118359440).

Almost surely, 2^18675612056 is an apocalyptic number.

It is an amenable number.

18675612056 is a deficient number, since it is larger than the sum of its proper divisors (17111890024).

18675612056 is a wasteful number, since it uses less digits than its factorization.

18675612056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35735 (or 35731 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 18675612056 in words is "eighteen billion, six hundred seventy-five million, six hundred twelve thousand, fifty-six".