171669043423 has 24 divisors (see below), whose sum is σ = 178749267840. Its totient is φ = 164860782240.

The previous prime is 171669043369. The next prime is 171669043439. The reversal of 171669043423 is 324340966171.

It is a de Polignac number, because none of the positive numbers 2^k-171669043423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171669043463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181276236 + ... + 181277182.

It is an arithmetic number, because the mean of its divisors is an integer number (7447886160).

Almost surely, 2^171669043423 is an apocalyptic number.

171669043423 is a deficient number, since it is larger than the sum of its proper divisors (7080224417).

171669043423 is an equidigital number, since it uses as much as digits as its factorization.

171669043423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 171669043423 in words is "one hundred seventy-one billion, six hundred sixty-nine million, forty-three thousand, four hundred twenty-three".