161543410422 has 8 divisors (see below), whose sum is σ = 323086820856. Its totient is φ = 53847803472.

The previous prime is 161543410417. The next prime is 161543410429. The reversal of 161543410422 is 224014345161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

161543410422 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161543410429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13461950863 + ... + 13461950874.

It is an arithmetic number, because the mean of its divisors is an integer number (40385852607).

Almost surely, 2^161543410422 is an apocalyptic number.

161543410422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161543410422 is a wasteful number, since it uses less digits than its factorization.

161543410422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26923901742.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 161543410422 its reverse (224014345161), we get a palindrome (385557755583).

The spelling of 161543410422 in words is "one hundred sixty-one billion, five hundred forty-three million, four hundred ten thousand, four hundred twenty-two".