22188335556 has 96 divisors (see below), whose sum is σ = 54067305600. Its totient is φ = 7075962880.

The previous prime is 22188335537. The next prime is 22188335557. The reversal of 22188335556 is 65553388122.

It is not an unprimeable number, because it can be changed into a prime (22188335557) 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, 17212960 + ... + 17214248.

It is an arithmetic number, because the mean of its divisors is an integer number (563201100).

Almost surely, 2^22188335556 is an apocalyptic number.

It is an amenable number.

22188335556 is an abundant number, since it is smaller than the sum of its proper divisors (31878970044).

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

22188335556 is a wasteful number, since it uses less digits than its factorization.

22188335556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The spelling of 22188335556 in words is "twenty-two billion, one hundred eighty-eight million, three hundred thirty-five thousand, five hundred fifty-six".