161304223102 has 16 divisors (see below), whose sum is σ = 263967724800. Its totient is φ = 73315834840.

The previous prime is 161304223037. The next prime is 161304223103. The reversal of 161304223102 is 201322403161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161304223103) 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 7 ways as a sum of consecutive naturals, for example, 190299 + ... + 599017.

It is an arithmetic number, because the mean of its divisors is an integer number (16497982800).

Almost surely, 2^161304223102 is an apocalyptic number.

161304223102 is a deficient number, since it is larger than the sum of its proper divisors (102663501698).

161304223102 is a wasteful number, since it uses less digits than its factorization.

161304223102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426671.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 161304223102 its reverse (201322403161), we get a palindrome (362626626263).

The spelling of 161304223102 in words is "one hundred sixty-one billion, three hundred four million, two hundred twenty-three thousand, one hundred two".