27540507737 has 2 divisors, whose sum is σ = 27540507738. Its totient is φ = 27540507736.

The previous prime is 27540507721. The next prime is 27540507811. The reversal of 27540507737 is 73770504572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25669166656 + 1871341081 = 160216^2 + 43259^2 .

It is a cyclic number.

It is not a de Polignac number, because 27540507737 - 2⁴ = 27540507721 is a prime.

It is a super-2 number, since 2×27540507737² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27540507691 and 27540507700.

It is not a weakly prime, because it can be changed into another prime (27540507037) 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, 13770253868 + 13770253869.

It is an arithmetic number, because the mean of its divisors is an integer number (13770253869).

Almost surely, 2^27540507737 is an apocalyptic number.

It is an amenable number.

27540507737 is a deficient number, since it is larger than the sum of its proper divisors (1).

27540507737 is an equidigital number, since it uses as much as digits as its factorization.

27540507737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440600, while the sum is 47.

The spelling of 27540507737 in words is "twenty-seven billion, five hundred forty million, five hundred seven thousand, seven hundred thirty-seven".