667622417456 has 10 divisors (see below), whose sum is σ = 1293518433852. Its totient is φ = 333811208720.

The previous prime is 667622417447. The next prime is 667622417471. The reversal of 667622417456 is 654714226766.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20863200530 + ... + 20863200561.

Almost surely, 2^667622417456 is an apocalyptic number.

It is an amenable number.

667622417456 is a deficient number, since it is larger than the sum of its proper divisors (625896016396).

667622417456 is a wasteful number, since it uses less digits than its factorization.

667622417456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41726401099 (or 41726401093 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 56.

The spelling of 667622417456 in words is "six hundred sixty-seven billion, six hundred twenty-two million, four hundred seventeen thousand, four hundred fifty-six".