27804842815 has 4 divisors (see below), whose sum is σ = 33365811384. Its totient is φ = 22243874248.

The previous prime is 27804842789. The next prime is 27804842827. The reversal of 27804842815 is 51824840872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27804842815 - 2⁵ = 27804842783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780484277 + ... + 2780484286.

It is an arithmetic number, because the mean of its divisors is an integer number (8341452846).

Almost surely, 2^27804842815 is an apocalyptic number.

27804842815 is a deficient number, since it is larger than the sum of its proper divisors (5560968569).

27804842815 is an equidigital number, since it uses as much as digits as its factorization.

27804842815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560968568.

The product of its (nonzero) digits is 1146880, while the sum is 49.

The spelling of 27804842815 in words is "twenty-seven billion, eight hundred four million, eight hundred forty-two thousand, eight hundred fifteen".