667428168318 has 16 divisors (see below), whose sum is σ = 1335671784720. Its totient is φ = 222340148096.

The previous prime is 667428168307. The next prime is 667428168349. The reversal of 667428168318 is 813861824766.

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, 33966363 + ... + 33986006.

It is an arithmetic number, because the mean of its divisors is an integer number (83479486545).

Almost surely, 2^667428168318 is an apocalyptic number.

667428168318 is an abundant number, since it is smaller than the sum of its proper divisors (668243616402).

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

667428168318 is a wasteful number, since it uses less digits than its factorization.

667428168318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67954011.

The product of its digits is 18579456, while the sum is 60.

The spelling of 667428168318 in words is "six hundred sixty-seven billion, four hundred twenty-eight million, one hundred sixty-eight thousand, three hundred eighteen".