18320623624 has 16 divisors (see below), whose sum is σ = 34392718800. Its totient is φ = 9149231952.

The previous prime is 18320623609. The next prime is 18320623637. The reversal of 18320623624 is 42632602381.

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, 1377954 + ... + 1391185.

It is an arithmetic number, because the mean of its divisors is an integer number (2149544925).

Almost surely, 2^18320623624 is an apocalyptic number.

It is an amenable number.

18320623624 is a deficient number, since it is larger than the sum of its proper divisors (16072095176).

18320623624 is a wasteful number, since it uses less digits than its factorization.

18320623624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769972 (or 2769968 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 18320623624 in words is "eighteen billion, three hundred twenty million, six hundred twenty-three thousand, six hundred twenty-four".