18032476688 has 20 divisors (see below), whose sum is σ = 34972581180. Its totient is φ = 9007294464.

The previous prime is 18032476643. The next prime is 18032476711. The reversal of 18032476688 is 88667423081.

It can be written as a sum of positive squares in 2 ways, for example, as 10710594064 + 7321882624 = 103492^2 + 85568^2 .

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, 542345 + ... + 574632.

It is an arithmetic number, because the mean of its divisors is an integer number (1748629059).

Almost surely, 2^18032476688 is an apocalyptic number.

It is an amenable number.

18032476688 is a deficient number, since it is larger than the sum of its proper divisors (16940104492).

18032476688 is a wasteful number, since it uses less digits than its factorization.

18032476688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117994 (or 1117988 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 18032476688 in words is "eighteen billion, thirty-two million, four hundred seventy-six thousand, six hundred eighty-eight".