18888642944446 has 32 divisors (see below), whose sum is σ = 30953007083520. Its totient is φ = 8573442847200.

The previous prime is 18888642944377. The next prime is 18888642944489. The reversal of 18888642944446 is 64444924688881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56120955 + ... + 56456521.

It is an arithmetic number, because the mean of its divisors is an integer number (967281471360).

Almost surely, 2^{18888642944446} is an apocalyptic number.

18888642944446 is a deficient number, since it is larger than the sum of its proper divisors (12064364139074).

18888642944446 is a wasteful number, since it uses less digits than its factorization.

18888642944446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339240.

The product of its digits is 2717908992, while the sum is 76.

The spelling of 18888642944446 in words is "eighteen trillion, eight hundred eighty-eight billion, six hundred forty-two million, nine hundred forty-four thousand, four hundred forty-six".