171324204497 has 2 divisors, whose sum is σ = 171324204498. Its totient is φ = 171324204496.

The previous prime is 171324204487. The next prime is 171324204523. The reversal of 171324204497 is 794402423171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121644698176 + 49679506321 = 348776^2 + 222889^2 .

It is a cyclic number.

It is not a de Polignac number, because 171324204497 - 2³⁴ = 154144335313 is a prime.

It is not a weakly prime, because it can be changed into another prime (171324204407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85662102248 + 85662102249.

It is an arithmetic number, because the mean of its divisors is an integer number (85662102249).

Almost surely, 2^171324204497 is an apocalyptic number.

It is an amenable number.

171324204497 is a deficient number, since it is larger than the sum of its proper divisors (1).

171324204497 is an equidigital number, since it uses as much as digits as its factorization.

171324204497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 171324204497 in words is "one hundred seventy-one billion, three hundred twenty-four million, two hundred four thousand, four hundred ninety-seven".