171640347023 has 2 divisors, whose sum is σ = 171640347024. Its totient is φ = 171640347022.

The previous prime is 171640347013. The next prime is 171640347031. The reversal of 171640347023 is 320743046171.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171640347023 - 2¹⁶ = 171640281487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171640347013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85820173511 + 85820173512.

It is an arithmetic number, because the mean of its divisors is an integer number (85820173512).

Almost surely, 2^171640347023 is an apocalyptic number.

171640347023 is a deficient number, since it is larger than the sum of its proper divisors (1).

171640347023 is an equidigital number, since it uses as much as digits as its factorization.

171640347023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 171640347023 in words is "one hundred seventy-one billion, six hundred forty million, three hundred forty-seven thousand, twenty-three".