27806057827 has 4 divisors (see below), whose sum is σ = 27890064376. Its totient is φ = 27722051280.

The previous prime is 27806057809. The next prime is 27806057831. The reversal of 27806057827 is 72875060872.

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 27806057827 - 2¹⁵ = 27806025059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27806067827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42002778 + ... + 42003439.

It is an arithmetic number, because the mean of its divisors is an integer number (6972516094).

Almost surely, 2^27806057827 is an apocalyptic number.

27806057827 is a deficient number, since it is larger than the sum of its proper divisors (84006549).

27806057827 is an equidigital number, since it uses as much as digits as its factorization.

27806057827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84006548.

The product of its (nonzero) digits is 2634240, while the sum is 52.

The spelling of 27806057827 in words is "twenty-seven billion, eight hundred six million, fifty-seven thousand, eight hundred twenty-seven".