18360505516 has 6 divisors (see below), whose sum is σ = 32130884660. Its totient is φ = 9180252756.

The previous prime is 18360505469. The next prime is 18360505519. The reversal of 18360505516 is 61550506381.

It is not an unprimeable number, because it can be changed into a prime (18360505519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2295063186 + ... + 2295063193.

Almost surely, 2^18360505516 is an apocalyptic number.

It is an amenable number.

18360505516 is a deficient number, since it is larger than the sum of its proper divisors (13770379144).

18360505516 is a wasteful number, since it uses less digits than its factorization.

18360505516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590126383 (or 4590126381 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 18360505516 in words is "eighteen billion, three hundred sixty million, five hundred five thousand, five hundred sixteen".