28257579559 has 16 divisors (see below), whose sum is σ = 32214504960. Its totient is φ = 24557420160.

The previous prime is 28257579547. The next prime is 28257579577. The reversal of 28257579559 is 95597575282.

It is a cyclic number.

It is not a de Polignac number, because 28257579559 - 2²⁷ = 28123361831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28257579559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28257579509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613314 + ... + 657775.

It is an arithmetic number, because the mean of its divisors is an integer number (2013406560).

Almost surely, 2^28257579559 is an apocalyptic number.

28257579559 is a deficient number, since it is larger than the sum of its proper divisors (3956925401).

28257579559 is a wasteful number, since it uses less digits than its factorization.

28257579559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271190.

The product of its digits is 79380000, while the sum is 64.

The spelling of 28257579559 in words is "twenty-eight billion, two hundred fifty-seven million, five hundred seventy-nine thousand, five hundred fifty-nine".