12660666260 has 24 divisors (see below), whose sum is σ = 29004435936. Its totient is φ = 4603878560.

The previous prime is 12660666247. The next prime is 12660666287. The reversal of 12660666260 is 6266606621.

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, 28774022 + ... + 28774461.

It is an arithmetic number, because the mean of its divisors is an integer number (1208518164).

Almost surely, 2^12660666260 is an apocalyptic number.

12660666260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12660666260 is an abundant number, since it is smaller than the sum of its proper divisors (16343769676).

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

12660666260 is a wasteful number, since it uses less digits than its factorization.

12660666260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57548503 (or 57548501 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 12660666260 in words is "twelve billion, six hundred sixty million, six hundred sixty-six thousand, two hundred sixty".