27323942309 has 2 divisors, whose sum is σ = 27323942310. Its totient is φ = 27323942308.

The previous prime is 27323942249. The next prime is 27323942323. The reversal of 27323942309 is 90324932372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26543578084 + 780364225 = 162922^2 + 27935^2 .

It is a cyclic number.

It is not a de Polignac number, because 27323942309 - 2²⁸ = 27055506853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27323942309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27323942509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13661971154 + 13661971155.

It is an arithmetic number, because the mean of its divisors is an integer number (13661971155).

Almost surely, 2^27323942309 is an apocalyptic number.

It is an amenable number.

27323942309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27323942309 is an equidigital number, since it uses as much as digits as its factorization.

27323942309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 27323942309 in words is "twenty-seven billion, three hundred twenty-three million, nine hundred forty-two thousand, three hundred nine".