17988056836 has 12 divisors (see below), whose sum is σ = 31620262912. Its totient is φ = 8953696008.

The previous prime is 17988056791. The next prime is 17988056837. The reversal of 17988056836 is 63865088971.

It is not an unprimeable number, because it can be changed into a prime (17988056837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10082100 + ... + 10083883.

Almost surely, 2^17988056836 is an apocalyptic number.

It is an amenable number.

17988056836 is a deficient number, since it is larger than the sum of its proper divisors (13632206076).

17988056836 is a wasteful number, since it uses less digits than its factorization.

17988056836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166210 (or 20166208 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 17988056836 in words is "seventeen billion, nine hundred eighty-eight million, fifty-six thousand, eight hundred thirty-six".