18065604686 has 8 divisors (see below), whose sum is σ = 27109989624. Its totient is φ = 9028941480.

The previous prime is 18065604677. The next prime is 18065604707. The reversal of 18065604686 is 68640656081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1924580 + ... + 1933943.

It is an arithmetic number, because the mean of its divisors is an integer number (3388748703).

Almost surely, 2^18065604686 is an apocalyptic number.

18065604686 is a deficient number, since it is larger than the sum of its proper divisors (9044384938).

18065604686 is a wasteful number, since it uses less digits than its factorization.

18065604686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860866.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 18065604686 in words is "eighteen billion, sixty-five million, six hundred four thousand, six hundred eighty-six".