28585563265 has 16 divisors (see below), whose sum is σ = 39205802880. Its totient is φ = 19600156800.

The previous prime is 28585563247. The next prime is 28585563283. The reversal of 28585563265 is 56236558582.

It is an interprime number because it is at equal distance from previous prime (28585563247) and next prime (28585563283).

It is not a de Polignac number, because 28585563265 - 2³¹ = 26438079617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957565 + ... + 986965.

It is an arithmetic number, because the mean of its divisors is an integer number (2450362680).

Almost surely, 2^28585563265 is an apocalyptic number.

It is an amenable number.

28585563265 is a deficient number, since it is larger than the sum of its proper divisors (10620239615).

28585563265 is a wasteful number, since it uses less digits than its factorization.

28585563265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57192.

The product of its digits is 17280000, while the sum is 55.

The spelling of 28585563265 in words is "twenty-eight billion, five hundred eighty-five million, five hundred sixty-three thousand, two hundred sixty-five".