27850840847 has 2 divisors, whose sum is σ = 27850840848. Its totient is φ = 27850840846.

The previous prime is 27850840837. The next prime is 27850840859. The reversal of 27850840847 is 74804805872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27850840847 - 2²² = 27846646543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27850840837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13925420423 + 13925420424.

It is an arithmetic number, because the mean of its divisors is an integer number (13925420424).

Almost surely, 2^27850840847 is an apocalyptic number.

27850840847 is a deficient number, since it is larger than the sum of its proper divisors (1).

27850840847 is an equidigital number, since it uses as much as digits as its factorization.

27850840847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4014080, while the sum is 53.

The spelling of 27850840847 in words is "twenty-seven billion, eight hundred fifty million, eight hundred forty thousand, eight hundred forty-seven".