667223178364 has 6 divisors (see below), whose sum is σ = 1167640562144. Its totient is φ = 333611589180.

The previous prime is 667223178359. The next prime is 667223178421. The reversal of 667223178364 is 463871322766.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83402897292 + ... + 83402897299.

Almost surely, 2^667223178364 is an apocalyptic number.

It is an amenable number.

667223178364 is a deficient number, since it is larger than the sum of its proper divisors (500417383780).

667223178364 is a wasteful number, since it uses less digits than its factorization.

667223178364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166805794595 (or 166805794593 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 55.

The spelling of 667223178364 in words is "six hundred sixty-seven billion, two hundred twenty-three million, one hundred seventy-eight thousand, three hundred sixty-four".