27439485673 has 2 divisors, whose sum is σ = 27439485674. Its totient is φ = 27439485672.

The previous prime is 27439485653. The next prime is 27439485707. The reversal of 27439485673 is 37658493472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20361292249 + 7078193424 = 142693^2 + 84132^2 .

It is a cyclic number.

It is not a de Polignac number, because 27439485673 - 2²¹ = 27437388521 is a prime.

It is not a weakly prime, because it can be changed into another prime (27439485643) 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, 13719742836 + 13719742837.

It is an arithmetic number, because the mean of its divisors is an integer number (13719742837).

Almost surely, 2^27439485673 is an apocalyptic number.

It is an amenable number.

27439485673 is a deficient number, since it is larger than the sum of its proper divisors (1).

27439485673 is an equidigital number, since it uses as much as digits as its factorization.

27439485673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30481920, while the sum is 58.

The spelling of 27439485673 in words is "twenty-seven billion, four hundred thirty-nine million, four hundred eighty-five thousand, six hundred seventy-three".