28539595564 has 24 divisors (see below), whose sum is σ = 50131010160. Its totient is φ = 14216495616.

The previous prime is 28539595549. The next prime is 28539595613. The reversal of 28539595564 is 46559593582.

It is a happy number.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3405972 + ... + 3414340.

It is an arithmetic number, because the mean of its divisors is an integer number (2088792090).

Almost surely, 2^28539595564 is an apocalyptic number.

It is an amenable number.

28539595564 is a deficient number, since it is larger than the sum of its proper divisors (21591414596).

28539595564 is a wasteful number, since it uses less digits than its factorization.

28539595564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11457 (or 11455 counting only the distinct ones).

The product of its digits is 58320000, while the sum is 61.

The spelling of 28539595564 in words is "twenty-eight billion, five hundred thirty-nine million, five hundred ninety-five thousand, five hundred sixty-four".