161377316 has 6 divisors (see below), whose sum is σ = 282410310. Its totient is φ = 80688656.

The previous prime is 161377301. The next prime is 161377343. The reversal of 161377316 is 613773161.

It can be written as a sum of positive squares in only one way, i.e., 106172416 + 55204900 = 10304^2 + 7430^2 .

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 as a sum of consecutive naturals, namely, 20172161 + ... + 20172168.

It is an arithmetic number, because the mean of its divisors is an integer number (47068385).

Almost surely, 2^161377316 is an apocalyptic number.

It is an amenable number.

161377316 is a deficient number, since it is larger than the sum of its proper divisors (121032994).

161377316 is a wasteful number, since it uses less digits than its factorization.

161377316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40344333 (or 40344331 counting only the distinct ones).

The product of its digits is 15876, while the sum is 35.

The square root of 161377316 is about 12703.4371726710. The cubic root of 161377316 is about 544.4368292455.

The spelling of 161377316 in words is "one hundred sixty-one million, three hundred seventy-seven thousand, three hundred sixteen".