18544655066 has 16 divisors (see below), whose sum is σ = 31814934720. Its totient is φ = 7941684960.

The previous prime is 18544655047. The next prime is 18544655081. The reversal of 18544655066 is 66055644581.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482876 + ... + 519863.

It is an arithmetic number, because the mean of its divisors is an integer number (1988433420).

Almost surely, 2^18544655066 is an apocalyptic number.

18544655066 is a deficient number, since it is larger than the sum of its proper divisors (13270279654).

18544655066 is a wasteful number, since it uses less digits than its factorization.

18544655066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004069.

The product of its (nonzero) digits is 3456000, while the sum is 50.

The spelling of 18544655066 in words is "eighteen billion, five hundred forty-four million, six hundred fifty-five thousand, sixty-six".