22156555506204 has 96 divisors (see below), whose sum is σ = 60854890969600. Its totient is φ = 6141702465792.

The previous prime is 22156555506179. The next prime is 22156555506209. The reversal of 22156555506204 is 40260555565122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22156555506209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9128602 + ... + 11297985.

Almost surely, 2^{22156555506204} is an apocalyptic number.

It is an amenable number.

22156555506204 is an abundant number, since it is smaller than the sum of its proper divisors (38698335463396).

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

22156555506204 is a wasteful number, since it uses less digits than its factorization.

22156555506204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20426987 (or 20426985 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 48.

The spelling of 22156555506204 in words is "twenty-two trillion, one hundred fifty-six billion, five hundred fifty-five million, five hundred six thousand, two hundred four".