28438598953 has 2 divisors, whose sum is σ = 28438598954. Its totient is φ = 28438598952.

The previous prime is 28438598917. The next prime is 28438598999. The reversal of 28438598953 is 35989583482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22161681424 + 6276917529 = 148868^2 + 79227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28438598953 is a prime.

It is not a weakly prime, because it can be changed into another prime (28438599953) by changing a digit.

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 as a sum of consecutive naturals, namely, 14219299476 + 14219299477.

It is an arithmetic number, because the mean of its divisors is an integer number (14219299477).

Almost surely, 2^28438598953 is an apocalyptic number.

It is an amenable number.

28438598953 is a deficient number, since it is larger than the sum of its proper divisors (1).

28438598953 is an equidigital number, since it uses as much as digits as its factorization.

28438598953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74649600, while the sum is 64.

The spelling of 28438598953 in words is "twenty-eight billion, four hundred thirty-eight million, five hundred ninety-eight thousand, nine hundred fifty-three".