161545323545422 has 12 divisors (see below), whose sum is σ = 250961908697136. Its totient is φ = 77987397572840.

The previous prime is 161545323545401. The next prime is 161545323545527. The reversal of 161545323545422 is 224545323545161.

It is a self number, because there is not a number n which added to its sum of digits gives 161545323545422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48021794854 + ... + 48021798217.

It is an arithmetic number, because the mean of its divisors is an integer number (20913492391428).

Almost surely, 2^{161545323545422} is an apocalyptic number.

161545323545422 is a deficient number, since it is larger than the sum of its proper divisors (89416585151714).

161545323545422 is an equidigital number, since it uses as much as digits as its factorization.

161545323545422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96043593131 (or 96043593102 counting only the distinct ones).

The product of its digits is 17280000, while the sum is 52.

The spelling of 161545323545422 in words is "one hundred sixty-one trillion, five hundred forty-five billion, three hundred twenty-three million, five hundred forty-five thousand, four hundred twenty-two".