161946517134 has 16 divisors (see below), whose sum is σ = 325702494720. Its totient is φ = 53680595640.

The previous prime is 161946517133. The next prime is 161946517177. The reversal of 161946517134 is 431715649161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161946517133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75393022 + ... + 75395169.

It is an arithmetic number, because the mean of its divisors is an integer number (20356405920).

Almost surely, 2^161946517134 is an apocalyptic number.

161946517134 is an abundant number, since it is smaller than the sum of its proper divisors (163755977586).

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

161946517134 is a wasteful number, since it uses less digits than its factorization.

161946517134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150788375.

The product of its digits is 544320, while the sum is 48.

The spelling of 161946517134 in words is "one hundred sixty-one billion, nine hundred forty-six million, five hundred seventeen thousand, one hundred thirty-four".