28556865583 has 2 divisors, whose sum is σ = 28556865584. Its totient is φ = 28556865582.

The previous prime is 28556865521. The next prime is 28556865593. The reversal of 28556865583 is 38556865582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28556865583 - 2²⁹ = 28019994671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28556865593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14278432791 + 14278432792.

It is an arithmetic number, because the mean of its divisors is an integer number (14278432792).

Almost surely, 2^28556865583 is an apocalyptic number.

28556865583 is a deficient number, since it is larger than the sum of its proper divisors (1).

28556865583 is an equidigital number, since it uses as much as digits as its factorization.

28556865583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120000, while the sum is 61.

Subtracting 28556865583 from its reverse (38556865582), we obtain a palindrome (9999999999).

The spelling of 28556865583 in words is "twenty-eight billion, five hundred fifty-six million, eight hundred sixty-five thousand, five hundred eighty-three".