18368353516 has 48 divisors (see below), whose sum is σ = 33480832000. Its totient is φ = 8811234432.

The previous prime is 18368353499. The next prime is 18368353567. The reversal of 18368353516 is 61535386381.

It is a self number, because there is not a number n which added to its sum of digits gives 18368353516.

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, 2700616 + ... + 2707408.

Almost surely, 2^18368353516 is an apocalyptic number.

It is an amenable number.

18368353516 is a deficient number, since it is larger than the sum of its proper divisors (15112478484).

18368353516 is a wasteful number, since it uses less digits than its factorization.

18368353516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118 (or 7116 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 18368353516 in words is "eighteen billion, three hundred sixty-eight million, three hundred fifty-three thousand, five hundred sixteen".