18252012566 has 32 divisors (see below), whose sum is σ = 29724825312. Its totient is φ = 8373657600.

The previous prime is 18252012551. The next prime is 18252012593. The reversal of 18252012566 is 66521025281.

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, 179666 + ... + 262266.

It is an arithmetic number, because the mean of its divisors is an integer number (928900791).

Almost surely, 2^18252012566 is an apocalyptic number.

18252012566 is a deficient number, since it is larger than the sum of its proper divisors (11472812746).

18252012566 is a wasteful number, since it uses less digits than its factorization.

18252012566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82784.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 18252012566 in words is "eighteen billion, two hundred fifty-two million, twelve thousand, five hundred sixty-six".