27459818909 has 2 divisors, whose sum is σ = 27459818910. Its totient is φ = 27459818908.

The previous prime is 27459818891. The next prime is 27459818927. The reversal of 27459818909 is 90981895472.

It is a balanced prime because it is at equal distance from previous prime (27459818891) and next prime (27459818927).

It can be written as a sum of positive squares in only one way, i.e., 17854838884 + 9604980025 = 133622^2 + 98005^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27459818909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27459818209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13729909454 + 13729909455.

It is an arithmetic number, because the mean of its divisors is an integer number (13729909455).

Almost surely, 2^27459818909 is an apocalyptic number.

It is an amenable number.

27459818909 is a deficient number, since it is larger than the sum of its proper divisors (1).

27459818909 is an equidigital number, since it uses as much as digits as its factorization.

27459818909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 27459818909 in words is "twenty-seven billion, four hundred fifty-nine million, eight hundred eighteen thousand, nine hundred nine".