13247065828 has 12 divisors (see below), whose sum is σ = 23240761852. Its totient is φ = 6606848160.

The previous prime is 13247065813. The next prime is 13247065879. The reversal of 13247065828 is 82856074231.

13247065828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10758253284 + 2488812544 = 103722^2 + 49888^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4169403 + ... + 4172578.

Almost surely, 2^13247065828 is an apocalyptic number.

It is an amenable number.

13247065828 is a deficient number, since it is larger than the sum of its proper divisors (9993696024).

13247065828 is a wasteful number, since it uses less digits than its factorization.

13247065828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342382 (or 8342380 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 13247065828 in words is "thirteen billion, two hundred forty-seven million, sixty-five thousand, eight hundred twenty-eight".