12728936975 has 6 divisors (see below), whose sum is σ = 15783881880. Its totient is φ = 10183149560.

The previous prime is 12728936947. The next prime is 12728936977. The reversal of 12728936975 is 57963982721.

It is a de Polignac number, because none of the positive numbers 2^k-12728936975 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12728936977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254578715 + ... + 254578764.

It is an arithmetic number, because the mean of its divisors is an integer number (2630646980).

Almost surely, 2^12728936975 is an apocalyptic number.

12728936975 is a deficient number, since it is larger than the sum of its proper divisors (3054944905).

12728936975 is an equidigital number, since it uses as much as digits as its factorization.

12728936975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509157489 (or 509157484 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 59.

The spelling of 12728936975 in words is "twelve billion, seven hundred twenty-eight million, nine hundred thirty-six thousand, nine hundred seventy-five".