667422505168 has 40 divisors (see below), whose sum is σ = 1386873511200. Its totient is φ = 310182447744.

The previous prime is 667422505159. The next prime is 667422505201. The reversal of 667422505168 is 861505224766.

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, 20695858 + ... + 20728081.

It is an arithmetic number, because the mean of its divisors is an integer number (34671837780).

Almost surely, 2^667422505168 is an apocalyptic number.

It is an amenable number.

667422505168 is an abundant number, since it is smaller than the sum of its proper divisors (719451006032).

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

667422505168 is a wasteful number, since it uses less digits than its factorization.

667422505168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41424019 (or 41424013 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 52.

The spelling of 667422505168 in words is "six hundred sixty-seven billion, four hundred twenty-two million, five hundred five thousand, one hundred sixty-eight".