161531351223162 has 32 divisors (see below), whose sum is σ = 337414536327168. Its totient is φ = 51456056280816.

The previous prime is 161531351223157. The next prime is 161531351223259. The reversal of 161531351223162 is 261322153135161.

161531351223162 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530453878 + ... + 530758305.

It is an arithmetic number, because the mean of its divisors is an integer number (10544204260224).

Almost surely, 2^{161531351223162} is an apocalyptic number.

161531351223162 is an abundant number, since it is smaller than the sum of its proper divisors (175883185104006).

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

161531351223162 is a wasteful number, since it uses less digits than its factorization.

161531351223162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061213314.

The product of its digits is 194400, while the sum is 42.

The spelling of 161531351223162 in words is "one hundred sixty-one trillion, five hundred thirty-one billion, three hundred fifty-one million, two hundred twenty-three thousand, one hundred sixty-two".