171409124657 has 2 divisors, whose sum is σ = 171409124658. Its totient is φ = 171409124656.

The previous prime is 171409124641. The next prime is 171409124671. The reversal of 171409124657 is 756421904171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166967035456 + 4442089201 = 408616^2 + 66649^2 .

It is a cyclic number.

It is not a de Polignac number, because 171409124657 - 2⁴ = 171409124641 is a prime.

It is not a weakly prime, because it can be changed into another prime (171409124617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85704562328 + 85704562329.

It is an arithmetic number, because the mean of its divisors is an integer number (85704562329).

Almost surely, 2^171409124657 is an apocalyptic number.

It is an amenable number.

171409124657 is a deficient number, since it is larger than the sum of its proper divisors (1).

171409124657 is an equidigital number, since it uses as much as digits as its factorization.

171409124657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 171409124657 in words is "one hundred seventy-one billion, four hundred nine million, one hundred twenty-four thousand, six hundred fifty-seven".