12660784904 has 16 divisors (see below), whose sum is σ = 23793802620. Its totient is φ = 6315770880.

The previous prime is 12660784897. The next prime is 12660784909. The reversal of 12660784904 is 40948706621.

It can be written as a sum of positive squares in 2 ways, for example, as 12523848100 + 136936804 = 111910^2 + 11702^2 .

It is not an unprimeable number, because it can be changed into a prime (12660784909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824017 + ... + 1830944.

Almost surely, 2^12660784904 is an apocalyptic number.

It is an amenable number.

12660784904 is a deficient number, since it is larger than the sum of its proper divisors (11133017716).

12660784904 is a wasteful number, since it uses less digits than its factorization.

12660784904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655400 (or 3655396 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 12660784904 in words is "twelve billion, six hundred sixty million, seven hundred eighty-four thousand, nine hundred four".