667688334216 has 16 divisors (see below), whose sum is σ = 1669220835600. Its totient is φ = 222562778064.

The previous prime is 667688334211. The next prime is 667688334281. The reversal of 667688334216 is 612433886766.

It is a self number, because there is not a number n which added to its sum of digits gives 667688334216.

It is not an unprimeable number, because it can be changed into a prime (667688334211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13910173606 + ... + 13910173653.

It is an arithmetic number, because the mean of its divisors is an integer number (104326302225).

Almost surely, 2^667688334216 is an apocalyptic number.

It is an amenable number.

667688334216 is an abundant number, since it is smaller than the sum of its proper divisors (1001532501384).

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

667688334216 is a wasteful number, since it uses less digits than its factorization.

667688334216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27820347268 (or 27820347264 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 60.

The spelling of 667688334216 in words is "six hundred sixty-seven billion, six hundred eighty-eight million, three hundred thirty-four thousand, two hundred sixteen".