133566066163406 has 4 divisors (see below), whose sum is σ = 200349099245112. Its totient is φ = 66783033081702.

The previous prime is 133566066163399. The next prime is 133566066163423. The reversal of 133566066163406 is 604361660665331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33391516540850 + ... + 33391516540853.

It is an arithmetic number, because the mean of its divisors is an integer number (50087274811278).

Almost surely, 2^{133566066163406} is an apocalyptic number.

133566066163406 is a deficient number, since it is larger than the sum of its proper divisors (66783033081706).

133566066163406 is an equidigital number, since it uses as much as digits as its factorization.

133566066163406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66783033081705.

The product of its (nonzero) digits is 25194240, while the sum is 56.

The spelling of 133566066163406 in words is "one hundred thirty-three trillion, five hundred sixty-six billion, sixty-six million, one hundred sixty-three thousand, four hundred six".