28605810585 has 32 divisors (see below), whose sum is σ = 52101024768. Its totient is φ = 13266461120.

The previous prime is 28605810557. The next prime is 28605810589. The reversal of 28605810585 is 58501850682.

It is not a de Polignac number, because 28605810585 - 2⁵ = 28605810553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28605810589) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3765087 + ... + 3772676.

It is an arithmetic number, because the mean of its divisors is an integer number (1628157024).

Almost surely, 2^28605810585 is an apocalyptic number.

It is an amenable number.

28605810585 is a deficient number, since it is larger than the sum of its proper divisors (23495214183).

28605810585 is a wasteful number, since it uses less digits than its factorization.

28605810585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537805.

The product of its (nonzero) digits is 768000, while the sum is 48.

The spelling of 28605810585 in words is "twenty-eight billion, six hundred five million, eight hundred ten thousand, five hundred eighty-five".