18297578476 has 12 divisors (see below), whose sum is σ = 32886188608. Its totient is φ = 8901524592.

The previous prime is 18297578459. The next prime is 18297578489. The reversal of 18297578476 is 67487579281.

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, 61815996 + ... + 61816291.

Almost surely, 2^18297578476 is an apocalyptic number.

It is an amenable number.

18297578476 is a deficient number, since it is larger than the sum of its proper divisors (14588610132).

18297578476 is a wasteful number, since it uses less digits than its factorization.

18297578476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123632328 (or 123632326 counting only the distinct ones).

The product of its digits is 47416320, while the sum is 64.

The spelling of 18297578476 in words is "eighteen billion, two hundred ninety-seven million, five hundred seventy-eight thousand, four hundred seventy-six".