22188055788 has 192 divisors, whose sum is σ = 60949324800. Its totient is φ = 6970199040.

The previous prime is 22188055787. The next prime is 22188055789. The reversal of 22188055788 is 88755088122.

22188055788 is a `hidden beast` number, since 2 + 2 + 1 + 8 + 8 + 0 + 557 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (22188055787) and next prime (22188055789).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (22188055781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25127595 + ... + 25128477.

It is an arithmetic number, because the mean of its divisors is an integer number (317444400).

Almost surely, 2^22188055788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22188055788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30474662400).

22188055788 is an abundant number, since it is smaller than the sum of its proper divisors (38761269012).

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

22188055788 is a wasteful number, since it uses less digits than its factorization.

22188055788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 54.

The spelling of 22188055788 in words is "twenty-two billion, one hundred eighty-eight million, fifty-five thousand, seven hundred eighty-eight".