18168265612 has 12 divisors (see below), whose sum is σ = 36336531280. Its totient is φ = 7786399536.

The previous prime is 18168265607. The next prime is 18168265657. The reversal of 18168265612 is 21656286181.

18168265612 is an admirable 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 in 3 ways as a sum of consecutive naturals, for example, 324433287 + ... + 324433342.

Almost surely, 2^18168265612 is an apocalyptic number.

It is an amenable number.

18168265612 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18168265612 is a wasteful number, since it uses less digits than its factorization.

18168265612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648866640 (or 648866638 counting only the distinct ones).

The product of its digits is 276480, while the sum is 46.

The spelling of 18168265612 in words is "eighteen billion, one hundred sixty-eight million, two hundred sixty-five thousand, six hundred twelve".