667400543130732 has 12 divisors (see below), whose sum is σ = 1557267933971736. Its totient is φ = 222466847710240.

The previous prime is 667400543130691. The next prime is 667400543130733. The reversal of 667400543130732 is 237031345004766.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (667400543130733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27808355963769 + ... + 27808355963792.

It is an arithmetic number, because the mean of its divisors is an integer number (129772327830978).

Almost surely, 2^{667400543130732} is an apocalyptic number.

It is an amenable number.

667400543130732 is an abundant number, since it is smaller than the sum of its proper divisors (889867390841004).

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

667400543130732 is a wasteful number, since it uses less digits than its factorization.

667400543130732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55616711927568 (or 55616711927566 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 51.

The spelling of 667400543130732 in words is "six hundred sixty-seven trillion, four hundred billion, five hundred forty-three million, one hundred thirty thousand, seven hundred thirty-two".