27863042257 has 2 divisors, whose sum is σ = 27863042258. Its totient is φ = 27863042256.

The previous prime is 27863042231. The next prime is 27863042281. The reversal of 27863042257 is 75224036872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18529743376 + 9333298881 = 136124^2 + 96609^2 .

It is a cyclic number.

It is not a de Polignac number, because 27863042257 - 2¹¹ = 27863040209 is a prime.

It is not a weakly prime, because it can be changed into another prime (27863042297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13931521128 + 13931521129.

It is an arithmetic number, because the mean of its divisors is an integer number (13931521129).

Almost surely, 2^27863042257 is an apocalyptic number.

It is an amenable number.

27863042257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27863042257 is an equidigital number, since it uses as much as digits as its factorization.

27863042257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 27863042257 in words is "twenty-seven billion, eight hundred sixty-three million, forty-two thousand, two hundred fifty-seven".