667417541572 has 12 divisors (see below), whose sum is σ = 1169831701696. Its totient is φ = 333179912520.

The previous prime is 667417541423. The next prime is 667417541573. The reversal of 667417541572 is 275145714766.

It is not an unprimeable number, because it can be changed into a prime (667417541573) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 132211728 + ... + 132216775.

Almost surely, 2^667417541572 is an apocalyptic number.

It is an amenable number.

667417541572 is a deficient number, since it is larger than the sum of its proper divisors (502414160124).

667417541572 is a wasteful number, since it uses less digits than its factorization.

667417541572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264429138 (or 264429136 counting only the distinct ones).

The product of its digits is 9878400, while the sum is 55.

The spelling of 667417541572 in words is "six hundred sixty-seven billion, four hundred seventeen million, five hundred forty-one thousand, five hundred seventy-two".