668332067133 has 4 divisors (see below), whose sum is σ = 891109422848. Its totient is φ = 445554711420.

The previous prime is 668332067113. The next prime is 668332067213. The reversal of 668332067133 is 331760233866.

It is a happy number.

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 668332067133 - 2²⁵ = 668298512701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668332067113) 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, 111388677853 + ... + 111388677858.

It is an arithmetic number, because the mean of its divisors is an integer number (222777355712).

Almost surely, 2^668332067133 is an apocalyptic number.

It is an amenable number.

668332067133 is a deficient number, since it is larger than the sum of its proper divisors (222777355715).

668332067133 is a wasteful number, since it uses less digits than its factorization.

668332067133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222777355714.

The product of its (nonzero) digits is 1959552, while the sum is 48.

The spelling of 668332067133 in words is "six hundred sixty-eight billion, three hundred thirty-two million, sixty-seven thousand, one hundred thirty-three".