27769442513 has 2 divisors, whose sum is σ = 27769442514. Its totient is φ = 27769442512.

The previous prime is 27769442471. The next prime is 27769442521. The reversal of 27769442513 is 31524496772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15717135424 + 12052307089 = 125368^2 + 109783^2 .

It is a cyclic number.

It is not a de Polignac number, because 27769442513 - 2²⁰ = 27768393937 is a prime.

It is a super-2 number, since 2×27769442513² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27769442413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13884721256 + 13884721257.

It is an arithmetic number, because the mean of its divisors is an integer number (13884721257).

Almost surely, 2^27769442513 is an apocalyptic number.

It is an amenable number.

27769442513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27769442513 is an equidigital number, since it uses as much as digits as its factorization.

27769442513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 50.

The spelling of 27769442513 in words is "twenty-seven billion, seven hundred sixty-nine million, four hundred forty-two thousand, five hundred thirteen".