11972192866 has 32 divisors (see below), whose sum is σ = 19245695040. Its totient is φ = 5569046784.

The previous prime is 11972192851. The next prime is 11972192879. The reversal of 11972192866 is 66829127911.

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, 637081 + ... + 655603.

It is an arithmetic number, because the mean of its divisors is an integer number (601427970).

Almost surely, 2^11972192866 is an apocalyptic number.

11972192866 is a deficient number, since it is larger than the sum of its proper divisors (7273502174).

11972192866 is a wasteful number, since it uses less digits than its factorization.

11972192866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850.

The product of its digits is 653184, while the sum is 52.

The spelling of 11972192866 in words is "eleven billion, nine hundred seventy-two million, one hundred ninety-two thousand, eight hundred sixty-six".