667672304752 has 40 divisors (see below), whose sum is σ = 1371254796576. Its totient is φ = 313844391936.

The previous prime is 667672304749. The next prime is 667672304777. The reversal of 667672304752 is 257403276766.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 667672304693 and 667672304702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142433 + ... + 1624960.

Almost surely, 2^667672304752 is an apocalyptic number.

It is an amenable number.

667672304752 is an abundant number, since it is smaller than the sum of its proper divisors (703582491824).

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

667672304752 is a wasteful number, since it uses less digits than its factorization.

667672304752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768305 (or 2768299 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 55.

The spelling of 667672304752 in words is "six hundred sixty-seven billion, six hundred seventy-two million, three hundred four thousand, seven hundred fifty-two".