22188052550 has 12 divisors (see below), whose sum is σ = 41269777836. Its totient is φ = 8875221000.

The previous prime is 22188052519. The next prime is 22188052559. The reversal of 22188052550 is 5525088122.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22188052559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 221880476 + ... + 221880575.

It is an arithmetic number, because the mean of its divisors is an integer number (3439148153).

Almost surely, 2^22188052550 is an apocalyptic number.

22188052550 is a deficient number, since it is larger than the sum of its proper divisors (19081725286).

22188052550 is a wasteful number, since it uses less digits than its factorization.

22188052550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443761063 (or 443761058 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 38.

The spelling of 22188052550 in words is "twenty-two billion, one hundred eighty-eight million, fifty-two thousand, five hundred fifty".