27491038529 has 2 divisors, whose sum is σ = 27491038530. Its totient is φ = 27491038528.

The previous prime is 27491038493. The next prime is 27491038541. The reversal of 27491038529 is 92583019472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21554644225 + 5936394304 = 146815^2 + 77048^2 .

It is a cyclic number.

It is not a de Polignac number, because 27491038529 - 2¹² = 27491034433 is a prime.

It is not a weakly prime, because it can be changed into another prime (27491038129) 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, 13745519264 + 13745519265.

It is an arithmetic number, because the mean of its divisors is an integer number (13745519265).

Almost surely, 2^27491038529 is an apocalyptic number.

It is an amenable number.

27491038529 is a deficient number, since it is larger than the sum of its proper divisors (1).

27491038529 is an equidigital number, since it uses as much as digits as its factorization.

27491038529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 27491038529 in words is "twenty-seven billion, four hundred ninety-one million, thirty-eight thousand, five hundred twenty-nine".