18057633772 has 24 divisors (see below), whose sum is σ = 33246531360. Its totient is φ = 8570528640.

The previous prime is 18057633761. The next prime is 18057633773. The reversal of 18057633772 is 27733675081.

It is not an unprimeable number, because it can be changed into a prime (18057633773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481872 + ... + 1494007.

It is an arithmetic number, because the mean of its divisors is an integer number (1385272140).

Almost surely, 2^18057633772 is an apocalyptic number.

It is an amenable number.

18057633772 is a deficient number, since it is larger than the sum of its proper divisors (15188897588).

18057633772 is a wasteful number, since it uses less digits than its factorization.

18057633772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975961 (or 2975959 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 18057633772 in words is "eighteen billion, fifty-seven million, six hundred thirty-three thousand, seven hundred seventy-two".