28539518336 has 64 divisors (see below), whose sum is σ = 65315438880. Its totient is φ = 12167774208.

The previous prime is 28539518327. The next prime is 28539518351. The reversal of 28539518336 is 63381593582.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 90410 + ... + 255446.

Almost surely, 2^28539518336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28539518336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32657719440).

28539518336 is an abundant number, since it is smaller than the sum of its proper divisors (36775920544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28539518336 is a wasteful number, since it uses less digits than its factorization.

28539518336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165251 (or 165239 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 53.

The spelling of 28539518336 in words is "twenty-eight billion, five hundred thirty-nine million, five hundred eighteen thousand, three hundred thirty-six".