12860606728 has 16 divisors (see below), whose sum is σ = 24115105980. Its totient is φ = 6429911808.

The previous prime is 12860606723. The next prime is 12860606761. The reversal of 12860606728 is 82760606821.

It can be written as a sum of positive squares in 2 ways, for example, as 12360547684 + 500059044 = 111178^2 + 22362^2 .

It is not an unprimeable number, because it can be changed into a prime (12860606723) 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, 128476 + ... + 205492.

Almost surely, 2^12860606728 is an apocalyptic number.

It is an amenable number.

12860606728 is a deficient number, since it is larger than the sum of its proper divisors (11254499252).

12860606728 is a wasteful number, since it uses less digits than its factorization.

12860606728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97896 (or 97892 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 12860606728 in words is "twelve billion, eight hundred sixty million, six hundred six thousand, seven hundred twenty-eight".