133566213160566 has 12 divisors (see below), whose sum is σ = 289393461847932. Its totient is φ = 44522071053516.

The previous prime is 133566213160561. The next prime is 133566213160631. The reversal of 133566213160566 is 665061312665331.

133566213160566 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 6 + 6 + 2 + 13 + 1 + 60 + 566 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133566213160561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3710172587776 + ... + 3710172587811.

It is an arithmetic number, because the mean of its divisors is an integer number (24116121820661).

Almost surely, 2^{133566213160566} is an apocalyptic number.

133566213160566 is an abundant number, since it is smaller than the sum of its proper divisors (155827248687366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133566213160566 is a wasteful number, since it uses less digits than its factorization.

133566213160566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7420345175595 (or 7420345175592 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 54.

The spelling of 133566213160566 in words is "one hundred thirty-three trillion, five hundred sixty-six billion, two hundred thirteen million, one hundred sixty thousand, five hundred sixty-six".