27149034917 has 2 divisors, whose sum is σ = 27149034918. Its totient is φ = 27149034916.

The previous prime is 27149034881. The next prime is 27149034923. The reversal of 27149034917 is 71943094172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25022810596 + 2126224321 = 158186^2 + 46111^2 .

It is a cyclic number.

It is not a de Polignac number, because 27149034917 - 2⁶ = 27149034853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27149034217) 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, 13574517458 + 13574517459.

It is an arithmetic number, because the mean of its divisors is an integer number (13574517459).

Almost surely, 2^27149034917 is an apocalyptic number.

It is an amenable number.

27149034917 is a deficient number, since it is larger than the sum of its proper divisors (1).

27149034917 is an equidigital number, since it uses as much as digits as its factorization.

27149034917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 27149034917 in words is "twenty-seven billion, one hundred forty-nine million, thirty-four thousand, nine hundred seventeen".