22661478156 has 24 divisors (see below), whose sum is σ = 52887291184. Its totient is φ = 7552324800.

The previous prime is 22661478143. The next prime is 22661478181. The reversal of 22661478156 is 65187416622.

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, 123895 + ... + 246318.

Almost surely, 2^22661478156 is an apocalyptic number.

It is an amenable number.

22661478156 is an abundant number, since it is smaller than the sum of its proper divisors (30225813028).

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

22661478156 is a wasteful number, since it uses less digits than its factorization.

22661478156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375321 (or 375319 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 22661478156 in words is "twenty-two billion, six hundred sixty-one million, four hundred seventy-eight thousand, one hundred fifty-six".