27800538875 has 8 divisors (see below), whose sum is σ = 34695072672. Its totient is φ = 22240431000.

The previous prime is 27800538811. The next prime is 27800538877. The reversal of 27800538875 is 57883500872.

It is not a de Polignac number, because 27800538875 - 2⁶ = 27800538811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27800538877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111202031 + ... + 111202280.

It is an arithmetic number, because the mean of its divisors is an integer number (4336884084).

Almost surely, 2^27800538875 is an apocalyptic number.

27800538875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27800538875 is a deficient number, since it is larger than the sum of its proper divisors (6894533797).

27800538875 is an equidigital number, since it uses as much as digits as its factorization.

27800538875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222404326 (or 222404316 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 27800538875 in words is "twenty-seven billion, eight hundred million, five hundred thirty-eight thousand, eight hundred seventy-five".