12728266794 has 24 divisors (see below), whose sum is σ = 27585903072. Its totient is φ = 4241526120.

The previous prime is 12728266783. The next prime is 12728266819. The reversal of 12728266794 is 49766282721.

It is a self number, because there is not a number n which added to its sum of digits gives 12728266794.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37504 + ... + 163899.

It is an arithmetic number, because the mean of its divisors is an integer number (1149412628).

Almost surely, 2^12728266794 is an apocalyptic number.

12728266794 is an abundant number, since it is smaller than the sum of its proper divisors (14857636278).

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

12728266794 is a wasteful number, since it uses less digits than its factorization.

12728266794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204922 (or 204919 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 12728266794 in words is "twelve billion, seven hundred twenty-eight million, two hundred sixty-six thousand, seven hundred ninety-four".