161329736812 has 12 divisors (see below), whose sum is σ = 282725248960. Its totient is φ = 80551094256.

The previous prime is 161329736783. The next prime is 161329736831. The reversal of 161329736812 is 218637923161.

161329736812 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28440348 + ... + 28446019.

Almost surely, 2^161329736812 is an apocalyptic number.

It is an amenable number.

161329736812 is a deficient number, since it is larger than the sum of its proper divisors (121395512148).

161329736812 is a wasteful number, since it uses less digits than its factorization.

161329736812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56887080 (or 56887078 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The spelling of 161329736812 in words is "one hundred sixty-one billion, three hundred twenty-nine million, seven hundred thirty-six thousand, eight hundred twelve".