161776016 has 10 divisors (see below), whose sum is σ = 313441062. Its totient is φ = 80888000.

The previous prime is 161776009. The next prime is 161776031. The reversal of 161776016 is 610677161.

It can be written as a sum of positive squares in only one way, i.e., 161391616 + 384400 = 12704^2 + 620^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055485 + ... + 5055516.

Almost surely, 2^161776016 is an apocalyptic number.

161776016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161776016 is a deficient number, since it is larger than the sum of its proper divisors (151665046).

161776016 is a wasteful number, since it uses less digits than its factorization.

161776016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111009 (or 10111003 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 161776016 is about 12719.1200953525. The cubic root of 161776016 is about 544.8848237380.

The spelling of 161776016 in words is "one hundred sixty-one million, seven hundred seventy-six thousand, sixteen".