12666660032 has 28 divisors (see below), whose sum is σ = 27068897856. Its totient is φ = 5846150400.

The previous prime is 12666659953. The next prime is 12666660037. The reversal of 12666660032 is 23006666621.

It is not an unprimeable number, because it can be changed into a prime (12666660037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7611344 + ... + 7613007.

It is an arithmetic number, because the mean of its divisors is an integer number (966746352).

Almost surely, 2^12666660032 is an apocalyptic number.

It is an amenable number.

12666660032 is an abundant number, since it is smaller than the sum of its proper divisors (14402237824).

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

12666660032 is a wasteful number, since it uses less digits than its factorization.

12666660032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15224376 (or 15224366 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 12666660032 in words is "twelve billion, six hundred sixty-six million, six hundred sixty thousand, thirty-two".