28805850855 has 32 divisors (see below), whose sum is σ = 54222782400. Its totient is φ = 14459406336.

The previous prime is 28805850841. The next prime is 28805850859. The reversal of 28805850855 is 55805850882.

28805850855 is a `hidden beast` number, since 2 + 8 + 8 + 0 + 585 + 0 + 8 + 55 = 666.

It is not a de Polignac number, because 28805850855 - 2¹⁴ = 28805834471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805850859) 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, 6273490 + ... + 6278079.

It is an arithmetic number, because the mean of its divisors is an integer number (1694461950).

Almost surely, 2^28805850855 is an apocalyptic number.

28805850855 is a deficient number, since it is larger than the sum of its proper divisors (25416931545).

28805850855 is a wasteful number, since it uses less digits than its factorization.

28805850855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12551600 (or 12551594 counting only the distinct ones).

The product of its (nonzero) digits is 5120000, while the sum is 54.

The spelling of 28805850855 in words is "twenty-eight billion, eight hundred five million, eight hundred fifty thousand, eight hundred fifty-five".