188922975566 has 16 divisors (see below), whose sum is σ = 311676531264. Its totient is φ = 85340001504.

The previous prime is 188922975559. The next prime is 188922975583. The reversal of 188922975566 is 665579229881.

188922975566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×188922975566² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 188922975496 and 188922975505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77299505 + ... + 77301948.

It is an arithmetic number, because the mean of its divisors is an integer number (19479783204).

Almost surely, 2^188922975566 is an apocalyptic number.

188922975566 is a deficient number, since it is larger than the sum of its proper divisors (122753555698).

188922975566 is a wasteful number, since it uses less digits than its factorization.

188922975566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154601515.

The product of its digits is 130636800, while the sum is 68.

The spelling of 188922975566 in words is "one hundred eighty-eight billion, nine hundred twenty-two million, nine hundred seventy-five thousand, five hundred sixty-six".