667396766212 has 48 divisors (see below), whose sum is σ = 1303166253312. Its totient is φ = 296465863680.

The previous prime is 667396766209. The next prime is 667396766221. The reversal of 667396766212 is 212667693766.

667396766212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151998 + ... + 1631530.

It is an arithmetic number, because the mean of its divisors is an integer number (27149296944).

Almost surely, 2^667396766212 is an apocalyptic number.

It is an amenable number.

667396766212 is a deficient number, since it is larger than the sum of its proper divisors (635769487100).

667396766212 is a wasteful number, since it uses less digits than its factorization.

667396766212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480268 (or 480266 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 61.

The spelling of 667396766212 in words is "six hundred sixty-seven billion, three hundred ninety-six million, seven hundred sixty-six thousand, two hundred twelve".