161936716 has 24 divisors (see below), whose sum is σ = 298158336. Its totient is φ = 76855680.

The previous prime is 161936711. The next prime is 161936717. The reversal of 161936716 is 617639161.

It is not an unprimeable number, because it can be changed into a prime (161936711) 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, 7276 + ... + 19411.

It is an arithmetic number, because the mean of its divisors is an integer number (12423264).

Almost surely, 2^161936716 is an apocalyptic number.

It is an amenable number.

161936716 is a deficient number, since it is larger than the sum of its proper divisors (136221620).

161936716 is a wasteful number, since it uses less digits than its factorization.

161936716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26769 (or 26767 counting only the distinct ones).

The product of its digits is 40824, while the sum is 40.

The square root of 161936716 is about 12725.4357882157. The cubic root of 161936716 is about 545.0651842467.

The spelling of 161936716 in words is "one hundred sixty-one million, nine hundred thirty-six thousand, seven hundred sixteen".