27235675309 has 2 divisors, whose sum is σ = 27235675310. Its totient is φ = 27235675308.

The previous prime is 27235675297. The next prime is 27235675373. The reversal of 27235675309 is 90357653272.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21186258025 + 6049417284 = 145555^2 + 77778^2 .

It is a cyclic number.

It is not a de Polignac number, because 27235675309 - 2⁹ = 27235674797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27235675109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13617837654 + 13617837655.

It is an arithmetic number, because the mean of its divisors is an integer number (13617837655).

Almost surely, 2^27235675309 is an apocalyptic number.

It is an amenable number.

27235675309 is a deficient number, since it is larger than the sum of its proper divisors (1).

27235675309 is an equidigital number, since it uses as much as digits as its factorization.

27235675309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 49.

The spelling of 27235675309 in words is "twenty-seven billion, two hundred thirty-five million, six hundred seventy-five thousand, three hundred nine".