181118688028 has 6 divisors (see below), whose sum is σ = 316957704056. Its totient is φ = 90559344012.

The previous prime is 181118688001. The next prime is 181118688053. The reversal of 181118688028 is 820886811181.

181118688028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22639836000 + ... + 22639836007.

Almost surely, 2^181118688028 is an apocalyptic number.

It is an amenable number.

181118688028 is a deficient number, since it is larger than the sum of its proper divisors (135839016028).

181118688028 is a wasteful number, since it uses less digits than its factorization.

181118688028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45279672011 (or 45279672009 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 52.

The spelling of 181118688028 in words is "one hundred eighty-one billion, one hundred eighteen million, six hundred eighty-eight thousand, twenty-eight".