667331579012 has 24 divisors (see below), whose sum is σ = 1334680870656. Its totient is φ = 285995452608.

The previous prime is 667331579009. The next prime is 667331579077. The reversal of 667331579012 is 210975133766.

It is a super-2 number, since 2×667331579012² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3371093 + ... + 3563555.

It is an arithmetic number, because the mean of its divisors is an integer number (55611702944).

Almost surely, 2^667331579012 is an apocalyptic number.

It is an amenable number.

667331579012 is an abundant number, since it is smaller than the sum of its proper divisors (667349291644).

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

667331579012 is a wasteful number, since it uses less digits than its factorization.

667331579012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316307 (or 316305 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 667331579012 in words is "six hundred sixty-seven billion, three hundred thirty-one million, five hundred seventy-nine thousand, twelve".