28765587259 has 2 divisors, whose sum is σ = 28765587260. Its totient is φ = 28765587258.

The previous prime is 28765587233. The next prime is 28765587271. The reversal of 28765587259 is 95278556782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28765587259 - 2²⁷ = 28631369531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28765587259.

It is not a weakly prime, because it can be changed into another prime (28765587209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14382793629 + 14382793630.

It is an arithmetic number, because the mean of its divisors is an integer number (14382793630).

Almost surely, 2^28765587259 is an apocalyptic number.

28765587259 is a deficient number, since it is larger than the sum of its proper divisors (1).

28765587259 is an equidigital number, since it uses as much as digits as its factorization.

28765587259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672000, while the sum is 64.

The spelling of 28765587259 in words is "twenty-eight billion, seven hundred sixty-five million, five hundred eighty-seven thousand, two hundred fifty-nine".