27505532969 has 2 divisors, whose sum is σ = 27505532970. Its totient is φ = 27505532968.

The previous prime is 27505532953. The next prime is 27505532987. The reversal of 27505532969 is 96923550572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15397831744 + 12107701225 = 124088^2 + 110035^2 .

It is a cyclic number.

It is not a de Polignac number, because 27505532969 - 2⁴ = 27505532953 is a prime.

It is a super-2 number, since 2×27505532969² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27505532969.

It is not a weakly prime, because it can be changed into another prime (27505532869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13752766484 + 13752766485.

It is an arithmetic number, because the mean of its divisors is an integer number (13752766485).

Almost surely, 2^27505532969 is an apocalyptic number.

It is an amenable number.

27505532969 is a deficient number, since it is larger than the sum of its proper divisors (1).

27505532969 is an equidigital number, since it uses as much as digits as its factorization.

27505532969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103000, while the sum is 53.

The spelling of 27505532969 in words is "twenty-seven billion, five hundred five million, five hundred thirty-two thousand, nine hundred sixty-nine".