174120085409 has 2 divisors, whose sum is σ = 174120085410. Its totient is φ = 174120085408.

The previous prime is 174120085313. The next prime is 174120085457. The reversal of 174120085409 is 904580021471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158461317184 + 15658768225 = 398072^2 + 125135^2 .

It is a cyclic number.

It is not a de Polignac number, because 174120085409 - 2²⁴ = 174103308193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (174120085709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87060042704 + 87060042705.

It is an arithmetic number, because the mean of its divisors is an integer number (87060042705).

Almost surely, 2^174120085409 is an apocalyptic number.

It is an amenable number.

174120085409 is a deficient number, since it is larger than the sum of its proper divisors (1).

174120085409 is an equidigital number, since it uses as much as digits as its factorization.

174120085409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 174120085409 in words is "one hundred seventy-four billion, one hundred twenty million, eighty-five thousand, four hundred nine".