22638467604 has 12 divisors (see below), whose sum is σ = 52823091104. Its totient is φ = 7546155864.

The previous prime is 22638467603. The next prime is 22638467617. The reversal of 22638467604 is 40676483622.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22638467603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943269472 + ... + 943269495.

Almost surely, 2^22638467604 is an apocalyptic number.

It is an amenable number.

22638467604 is an abundant number, since it is smaller than the sum of its proper divisors (30184623500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22638467604 is a wasteful number, since it uses less digits than its factorization.

22638467604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886538974 (or 1886538972 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 48.

The spelling of 22638467604 in words is "twenty-two billion, six hundred thirty-eight million, four hundred sixty-seven thousand, six hundred four".