27740545513 has 2 divisors, whose sum is σ = 27740545514. Its totient is φ = 27740545512.

The previous prime is 27740545477. The next prime is 27740545541. The reversal of 27740545513 is 31554504772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25340819344 + 2399726169 = 159188^2 + 48987^2 .

It is a cyclic number.

It is not a de Polignac number, because 27740545513 - 2¹⁷ = 27740414441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27740545513.

It is not a weakly prime, because it can be changed into another prime (27740545543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13870272756 + 13870272757.

It is an arithmetic number, because the mean of its divisors is an integer number (13870272757).

Almost surely, 2^27740545513 is an apocalyptic number.

It is an amenable number.

27740545513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27740545513 is an equidigital number, since it uses as much as digits as its factorization.

27740545513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 588000, while the sum is 43.

The spelling of 27740545513 in words is "twenty-seven billion, seven hundred forty million, five hundred forty-five thousand, five hundred thirteen".