188223247966 has 32 divisors (see below), whose sum is σ = 311521539168. Its totient is φ = 84739100160.

The previous prime is 188223247951. The next prime is 188223247973. The reversal of 188223247966 is 669742322881.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 188223247966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8648250 + ... + 8669986.

It is an arithmetic number, because the mean of its divisors is an integer number (9735048099).

Almost surely, 2^188223247966 is an apocalyptic number.

188223247966 is a deficient number, since it is larger than the sum of its proper divisors (123298291202).

188223247966 is a wasteful number, since it uses less digits than its factorization.

188223247966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29916.

The product of its digits is 13934592, while the sum is 58.

The spelling of 188223247966 in words is "one hundred eighty-eight billion, two hundred twenty-three million, two hundred forty-seven thousand, nine hundred sixty-six".