27038507761 has 2 divisors, whose sum is σ = 27038507762. Its totient is φ = 27038507760.

The previous prime is 27038507681. The next prime is 27038507777. The reversal of 27038507761 is 16770583072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23760372736 + 3278135025 = 154144^2 + 57255^2 .

It is a cyclic number.

It is not a de Polignac number, because 27038507761 - 2²⁹ = 26501636849 is a prime.

It is not a weakly prime, because it can be changed into another prime (27038501761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13519253880 + 13519253881.

It is an arithmetic number, because the mean of its divisors is an integer number (13519253881).

Almost surely, 2^27038507761 is an apocalyptic number.

It is an amenable number.

27038507761 is a deficient number, since it is larger than the sum of its proper divisors (1).

27038507761 is an equidigital number, since it uses as much as digits as its factorization.

27038507761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 46.

The spelling of 27038507761 in words is "twenty-seven billion, thirty-eight million, five hundred seven thousand, seven hundred sixty-one".