161273328113 has 16 divisors (see below), whose sum is σ = 173774785536. Its totient is φ = 149232832320.

The previous prime is 161273328091. The next prime is 161273328121. The reversal of 161273328113 is 311823372161.

It is a happy number.

161273328113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 161273328113 - 2⁸ = 161273327857 is a prime.

It is a super-2 number, since 2×161273328113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161273328193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2070095 + ... + 2146587.

It is an arithmetic number, because the mean of its divisors is an integer number (10860924096).

Almost surely, 2^161273328113 is an apocalyptic number.

It is an amenable number.

161273328113 is a deficient number, since it is larger than the sum of its proper divisors (12501457423).

161273328113 is a wasteful number, since it uses less digits than its factorization.

161273328113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79504.

The product of its digits is 36288, while the sum is 38.

The spelling of 161273328113 in words is "one hundred sixty-one billion, two hundred seventy-three million, three hundred twenty-eight thousand, one hundred thirteen".