667730575560156 has 12 divisors (see below), whose sum is σ = 1558038009640392. Its totient is φ = 222576858520048.

The previous prime is 667730575560143. The next prime is 667730575560163. The reversal of 667730575560156 is 651065575037766.

667730575560156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27822107314995 + ... + 27822107315018.

It is an arithmetic number, because the mean of its divisors is an integer number (129836500803366).

Almost surely, 2^{667730575560156} is an apocalyptic number.

It is an amenable number.

667730575560156 is an abundant number, since it is smaller than the sum of its proper divisors (890307434080236).

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

667730575560156 is a wasteful number, since it uses less digits than its factorization.

667730575560156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55644214630020 (or 55644214630018 counting only the distinct ones).

The product of its (nonzero) digits is 833490000, while the sum is 69.

The spelling of 667730575560156 in words is "six hundred sixty-seven trillion, seven hundred thirty billion, five hundred seventy-five million, five hundred sixty thousand, one hundred fifty-six".