22554439666 has 16 divisors (see below), whose sum is σ = 36912889728. Its totient is φ = 10250455600.

The previous prime is 22554439657. The next prime is 22554439667. The reversal of 22554439666 is 66693445522.

It is not an unprimeable number, because it can be changed into a prime (22554439667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76296 + ... + 225676.

It is an arithmetic number, because the mean of its divisors is an integer number (2307055608).

Almost surely, 2^22554439666 is an apocalyptic number.

22554439666 is a deficient number, since it is larger than the sum of its proper divisors (14358450062).

22554439666 is a wasteful number, since it uses less digits than its factorization.

22554439666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156257.

The product of its digits is 9331200, while the sum is 52.

The spelling of 22554439666 in words is "twenty-two billion, five hundred fifty-four million, four hundred thirty-nine thousand, six hundred sixty-six".