133566504166 has 24 divisors (see below), whose sum is σ = 205970279760. Its totient is φ = 64959583392.

The previous prime is 133566504161. The next prime is 133566504173. The reversal of 133566504166 is 661405665331.

It is a happy number.

It is a super-2 number, since 2×133566504166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133566504161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17144200 + ... + 17151988.

It is an arithmetic number, because the mean of its divisors is an integer number (8582094990).

Almost surely, 2^133566504166 is an apocalyptic number.

133566504166 is a deficient number, since it is larger than the sum of its proper divisors (72403775594).

133566504166 is an equidigital number, since it uses as much as digits as its factorization.

133566504166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14128 (or 14091 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 133566504166 in words is "one hundred thirty-three billion, five hundred sixty-six million, five hundred four thousand, one hundred sixty-six".