28798346513 has 2 divisors, whose sum is σ = 28798346514. Its totient is φ = 28798346512.

The previous prime is 28798346509. The next prime is 28798346597. The reversal of 28798346513 is 31564389782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28342395904 + 455950609 = 168352^2 + 21353^2 .

It is a cyclic number.

It is not a de Polignac number, because 28798346513 - 2² = 28798346509 is a prime.

It is not a weakly prime, because it can be changed into another prime (28798346813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14399173256 + 14399173257.

It is an arithmetic number, because the mean of its divisors is an integer number (14399173257).

Almost surely, 2^28798346513 is an apocalyptic number.

It is an amenable number.

28798346513 is a deficient number, since it is larger than the sum of its proper divisors (1).

28798346513 is an equidigital number, since it uses as much as digits as its factorization.

28798346513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 56.

The spelling of 28798346513 in words is "twenty-eight billion, seven hundred ninety-eight million, three hundred forty-six thousand, five hundred thirteen".