133666255506204 has 36 divisors (see below), whose sum is σ = 337880068900920. Its totient is φ = 44555223522720.

The previous prime is 133666255506143. The next prime is 133666255506209. The reversal of 133666255506204 is 402605552666331.

It is a happy number.

133666255506204 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×133666255506204² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) 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 (133666255506209) 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, 337327 + ... + 16353785.

It is an arithmetic number, because the mean of its divisors is an integer number (9385557469470).

Almost surely, 2^{133666255506204} is an apocalyptic number.

It is an amenable number.

133666255506204 is an abundant number, since it is smaller than the sum of its proper divisors (204213813394716).

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

133666255506204 is a wasteful number, since it uses less digits than its factorization.

133666255506204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16248290 (or 16248285 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 133666255506204 in words is "one hundred thirty-three trillion, six hundred sixty-six billion, two hundred fifty-five million, five hundred six thousand, two hundred four".