133666832302257 has 4 divisors (see below), whose sum is σ = 178222443069680. Its totient is φ = 89111221534836.

The previous prime is 133666832302247. The next prime is 133666832302261. The reversal of 133666832302257 is 752203238666331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 133666832302257 - 2²⁷ = 133666698084529 is a prime.

It is a super-3 number, since 3×133666832302257³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133666832302197 and 133666832302206.

It is not an unprimeable number, because it can be changed into a prime (133666832302247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22277805383707 + ... + 22277805383712.

It is an arithmetic number, because the mean of its divisors is an integer number (44555610767420).

Almost surely, 2^{133666832302257} is an apocalyptic number.

It is an amenable number.

133666832302257 is a deficient number, since it is larger than the sum of its proper divisors (44555610767423).

133666832302257 is an equidigital number, since it uses as much as digits as its factorization.

133666832302257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44555610767422.

The product of its (nonzero) digits is 39191040, while the sum is 57.

The spelling of 133666832302257 in words is "one hundred thirty-three trillion, six hundred sixty-six billion, eight hundred thirty-two million, three hundred two thousand, two hundred fifty-seven".