161006105 has 16 divisors (see below), whose sum is σ = 208375104. Its totient is φ = 118722240.

The previous prime is 161006089. The next prime is 161006107. The reversal of 161006105 is 501600161.

It is a happy number.

It is not a de Polignac number, because 161006105 - 2⁴ = 161006089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161006107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57590 + ... + 60320.

It is an arithmetic number, because the mean of its divisors is an integer number (13023444).

Almost surely, 2^161006105 is an apocalyptic number.

It is an amenable number.

161006105 is a deficient number, since it is larger than the sum of its proper divisors (47368999).

161006105 is a wasteful number, since it uses less digits than its factorization.

161006105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 161006105 is about 12688.8181088705. The cubic root of 161006105 is about 544.0190586334.

Adding to 161006105 its reverse (501600161), we get a palindrome (662606266).

The spelling of 161006105 in words is "one hundred sixty-one million, six thousand, one hundred five".