27704742362257 has 2 divisors, whose sum is σ = 27704742362258. Its totient is φ = 27704742362256.

The previous prime is 27704742362233. The next prime is 27704742362267. The reversal of 27704742362257 is 75226324740772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26966407740561 + 738334621696 = 5192919^2 + 859264^2 .

It is a cyclic number.

It is not a de Polignac number, because 27704742362257 - 2²³ = 27704733973649 is a prime.

It is not a weakly prime, because it can be changed into another prime (27704742362267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13852371181128 + 13852371181129.

It is an arithmetic number, because the mean of its divisors is an integer number (13852371181129).

Almost surely, 2^{27704742362257} is an apocalyptic number.

It is an amenable number.

27704742362257 is a deficient number, since it is larger than the sum of its proper divisors (1).

27704742362257 is an equidigital number, since it uses as much as digits as its factorization.

27704742362257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55319040, while the sum is 58.

The spelling of 27704742362257 in words is "twenty-seven trillion, seven hundred four billion, seven hundred forty-two million, three hundred sixty-two thousand, two hundred fifty-seven".