28544341597 has 2 divisors, whose sum is σ = 28544341598. Its totient is φ = 28544341596.

The previous prime is 28544341577. The next prime is 28544341607. The reversal of 28544341597 is 79514344582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20063589316 + 8480752281 = 141646^2 + 92091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28544341597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28544341517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14272170798 + 14272170799.

It is an arithmetic number, because the mean of its divisors is an integer number (14272170799).

Almost surely, 2^28544341597 is an apocalyptic number.

It is an amenable number.

28544341597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28544341597 is an equidigital number, since it uses as much as digits as its factorization.

28544341597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 52.

The spelling of 28544341597 in words is "twenty-eight billion, five hundred forty-four million, three hundred forty-one thousand, five hundred ninety-seven".