22404556636 has 24 divisors (see below), whose sum is σ = 48882669696. Its totient is φ = 8729047920.

The previous prime is 22404556627. The next prime is 22404556673. The reversal of 22404556636 is 63665540422.

It is a junction number, because it is equal to n+sod(n) for n = 22404556592 and 22404556601.

It is a congruent 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, 36370726 + ... + 36371341.

It is an arithmetic number, because the mean of its divisors is an integer number (2036777904).

Almost surely, 2^22404556636 is an apocalyptic number.

It is an amenable number.

22404556636 is an abundant number, since it is smaller than the sum of its proper divisors (26478113060).

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

22404556636 is a wasteful number, since it uses less digits than its factorization.

22404556636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72742089 (or 72742087 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 22404556636 in words is "twenty-two billion, four hundred four million, five hundred fifty-six thousand, six hundred thirty-six".