18000043499992 has 64 divisors (see below), whose sum is σ = 35131017617280. Its totient is φ = 8639255519232.

The previous prime is 18000043499989. The next prime is 18000043500059. The reversal of 18000043499992 is 29999434000081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56296608 + ... + 56615440.

It is an arithmetic number, because the mean of its divisors is an integer number (548922150270).

Almost surely, 2^{18000043499992} is an apocalyptic number.

It is an amenable number.

18000043499992 is a deficient number, since it is larger than the sum of its proper divisors (17130974117288).

18000043499992 is a wasteful number, since it uses less digits than its factorization.

18000043499992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321772 (or 321768 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 18000043499992 in words is "eighteen trillion, forty-three million, four hundred ninety-nine thousand, nine hundred ninety-two".