18477053992 has 8 divisors (see below), whose sum is σ = 34644476250. Its totient is φ = 9238526992.

The previous prime is 18477053989. The next prime is 18477054041. The reversal of 18477053992 is 29935077481.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17253873316 + 1223180676 = 131354^2 + 34974^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154815867 + ... + 1154815882.

Almost surely, 2^18477053992 is an apocalyptic number.

It is an amenable number.

18477053992 is a deficient number, since it is larger than the sum of its proper divisors (16167422258).

18477053992 is a wasteful number, since it uses less digits than its factorization.

18477053992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309631755 (or 2309631751 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 18477053992 in words is "eighteen billion, four hundred seventy-seven million, fifty-three thousand, nine hundred ninety-two".