27359698409 has 2 divisors, whose sum is σ = 27359698410. Its totient is φ = 27359698408.

The previous prime is 27359698351. The next prime is 27359698423. The reversal of 27359698409 is 90489695372.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16886222809 + 10473475600 = 129947^2 + 102340^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27359698409 is a prime.

It is not a weakly prime, because it can be changed into another prime (27359698469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13679849204 + 13679849205.

It is an arithmetic number, because the mean of its divisors is an integer number (13679849205).

Almost surely, 2^27359698409 is an apocalyptic number.

It is an amenable number.

27359698409 is a deficient number, since it is larger than the sum of its proper divisors (1).

27359698409 is an equidigital number, since it uses as much as digits as its factorization.

27359698409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 27359698409 in words is "twenty-seven billion, three hundred fifty-nine million, six hundred ninety-eight thousand, four hundred nine".