171663158323 has 2 divisors, whose sum is σ = 171663158324. Its totient is φ = 171663158322.

The previous prime is 171663158321. The next prime is 171663158327. The reversal of 171663158323 is 323851366171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171663158323 - 2¹ = 171663158321 is a prime.

Together with 171663158321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (171663158321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85831579161 + 85831579162.

It is an arithmetic number, because the mean of its divisors is an integer number (85831579162).

Almost surely, 2^171663158323 is an apocalyptic number.

171663158323 is a deficient number, since it is larger than the sum of its proper divisors (1).

171663158323 is an equidigital number, since it uses as much as digits as its factorization.

171663158323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The spelling of 171663158323 in words is "one hundred seventy-one billion, six hundred sixty-three million, one hundred fifty-eight thousand, three hundred twenty-three".