28559719268569 has 2 divisors, whose sum is σ = 28559719268570. Its totient is φ = 28559719268568.

The previous prime is 28559719268551. The next prime is 28559719268593. The reversal of 28559719268569 is 96586291795582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15178660160400 + 13381059108169 = 3895980^2 + 3658013^2 .

It is a cyclic number.

It is not a de Polignac number, because 28559719268569 - 2¹⁹ = 28559718744281 is a prime.

It is a super-2 number, since 2×28559719268569² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28559719268492 and 28559719268501.

It is not a weakly prime, because it can be changed into another prime (28559719278569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14279859634284 + 14279859634285.

It is an arithmetic number, because the mean of its divisors is an integer number (14279859634285).

Almost surely, 2^{28559719268569} is an apocalyptic number.

It is an amenable number.

28559719268569 is a deficient number, since it is larger than the sum of its proper divisors (1).

28559719268569 is an equidigital number, since it uses as much as digits as its factorization.

28559719268569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656000, while the sum is 82.

The spelling of 28559719268569 in words is "twenty-eight trillion, five hundred fifty-nine billion, seven hundred nineteen million, two hundred sixty-eight thousand, five hundred sixty-nine".