13028904817 has 4 divisors (see below), whose sum is σ = 13060760740. Its totient is φ = 12997048896.

The previous prime is 13028904803. The next prime is 13028904851. The reversal of 13028904817 is 71840982031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9660727521 + 3368177296 = 98289^2 + 58036^2 .

It is a cyclic number.

It is not a de Polignac number, because 13028904817 - 2²⁷ = 12894687089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13028904857) 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, 15927348 + ... + 15928165.

It is an arithmetic number, because the mean of its divisors is an integer number (3265190185).

Almost surely, 2^13028904817 is an apocalyptic number.

It is an amenable number.

13028904817 is a deficient number, since it is larger than the sum of its proper divisors (31855923).

13028904817 is an equidigital number, since it uses as much as digits as its factorization.

13028904817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31855922.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 13028904817 in words is "thirteen billion, twenty-eight million, nine hundred four thousand, eight hundred seventeen".