18191046223312 has 20 divisors (see below), whose sum is σ = 35245678257216. Its totient is φ = 9095387318240.

The previous prime is 18191046223309. The next prime is 18191046223453. The reversal of 18191046223312 is 21332264019181.

It is a congruent number.

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, 7377514 + ... + 9529417.

Almost surely, 2^{18191046223312} is an apocalyptic number.

It is an amenable number.

18191046223312 is a deficient number, since it is larger than the sum of its proper divisors (17054632033904).

18191046223312 is a wasteful number, since it uses less digits than its factorization.

18191046223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16974186 (or 16974180 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 18191046223312 in words is "eighteen trillion, one hundred ninety-one billion, forty-six million, two hundred twenty-three thousand, three hundred twelve".