133266533645656 has 8 divisors (see below), whose sum is σ = 249874750585620. Its totient is φ = 66633266822824.

The previous prime is 133266533645599. The next prime is 133266533645657. The reversal of 133266533645656 is 656546335662331.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133266533645657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8329158352846 + ... + 8329158352861.

Almost surely, 2^{133266533645656} is an apocalyptic number.

It is an amenable number.

133266533645656 is a deficient number, since it is larger than the sum of its proper divisors (116608216939964).

133266533645656 is a wasteful number, since it uses less digits than its factorization.

133266533645656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16658316705713 (or 16658316705709 counting only the distinct ones).

The product of its digits is 629856000, while the sum is 64.

The spelling of 133266533645656 in words is "one hundred thirty-three trillion, two hundred sixty-six billion, five hundred thirty-three million, six hundred forty-five thousand, six hundred fifty-six".