161084230609 has 9 divisors (see below), whose sum is σ = 171124406737. Its totient is φ = 151602265984.

The previous prime is 161084230591. The next prime is 161084230621. The reversal of 161084230609 is 906032480161.

The square root of 161084230609 is 401353.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1346523025 + 159737707584 = 36695^2 + 399672^2 .

It is not a de Polignac number, because 161084230609 - 2¹¹ = 161084228561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161084230649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6811197 + ... + 6834805.

Almost surely, 2^161084230609 is an apocalyptic number.

161084230609 is the 401353-rd square number.

161084230609 is the 200677-th centered octagonal number.

It is an amenable number.

161084230609 is a deficient number, since it is larger than the sum of its proper divisors (10040176128).

161084230609 is an frugal number, since it uses more digits than its factorization.

161084230609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47252 (or 23626 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 161084230609 in words is "one hundred sixty-one billion, eighty-four million, two hundred thirty thousand, six hundred nine".