165147589161 has 12 divisors (see below), whose sum is σ = 238664811892. Its totient is φ = 110043795456.

The previous prime is 165147589151. The next prime is 165147589199. The reversal of 165147589161 is 161985741561.

165147589161 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 47 + 589 + 16 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 88606833561 + 76540755600 = 297669^2 + 276660^2 .

It is not a de Polignac number, because 165147589161 - 2⁵ = 165147589129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165147589098 and 165147589107.

It is not an unprimeable number, because it can be changed into a prime (165147589151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4530616 + ... + 4566921.

Almost surely, 2^165147589161 is an apocalyptic number.

It is an amenable number.

165147589161 is a deficient number, since it is larger than the sum of its proper divisors (73517222731).

165147589161 is a wasteful number, since it uses less digits than its factorization.

165147589161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9099560 (or 9099557 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The spelling of 165147589161 in words is "one hundred sixty-five billion, one hundred forty-seven million, five hundred eighty-nine thousand, one hundred sixty-one".