666666531012 has 48 divisors (see below), whose sum is σ = 1568755157760. Its totient is φ = 220343633952.

The previous prime is 666666531007. The next prime is 666666531077. The reversal of 666666531012 is 210135666666.

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, 298143 + ... + 1192569.

It is an arithmetic number, because the mean of its divisors is an integer number (32682399120).

Almost surely, 2^666666531012 is an apocalyptic number.

It is an amenable number.

666666531012 is an abundant number, since it is smaller than the sum of its proper divisors (902088626748).

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

666666531012 is a wasteful number, since it uses less digits than its factorization.

666666531012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894960 (or 894958 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 666666531012 in words is "six hundred sixty-six billion, six hundred sixty-six million, five hundred thirty-one thousand, twelve".