27268886257 has 2 divisors, whose sum is σ = 27268886258. Its totient is φ = 27268886256.

The previous prime is 27268886237. The next prime is 27268886339. The reversal of 27268886257 is 75268886272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26872717041 + 396169216 = 163929^2 + 19904^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27268886257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27268886195 and 27268886204.

It is not a weakly prime, because it can be changed into another prime (27268886207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13634443128 + 13634443129.

It is an arithmetic number, because the mean of its divisors is an integer number (13634443129).

Almost surely, 2^27268886257 is an apocalyptic number.

It is an amenable number.

27268886257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27268886257 is an equidigital number, since it uses as much as digits as its factorization.

27268886257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36126720, while the sum is 61.

The spelling of 27268886257 in words is "twenty-seven billion, two hundred sixty-eight million, eight hundred eighty-six thousand, two hundred fifty-seven".