161060005 has 4 divisors (see below), whose sum is σ = 193272012. Its totient is φ = 128848000.

The previous prime is 161059999. The next prime is 161060033. The reversal of 161060005 is 500060161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500060161 = 853 ⋅586237.

It can be written as a sum of positive squares in 2 ways, for example, as 60699681 + 100360324 = 7791^2 + 10018^2 .

It is not a de Polignac number, because 161060005 - 2¹¹ = 161057957 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 16105996 + ... + 16106005.

It is an arithmetic number, because the mean of its divisors is an integer number (48318003).

Almost surely, 2^161060005 is an apocalyptic number.

It is an amenable number.

161060005 is a deficient number, since it is larger than the sum of its proper divisors (32212007).

161060005 is an equidigital number, since it uses as much as digits as its factorization.

161060005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32212006.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 161060005 is about 12690.9418484209. The cubic root of 161060005 is about 544.0797589316.

The spelling of 161060005 in words is "one hundred sixty-one million, sixty thousand, five".