161065662707238 has 32 divisors (see below), whose sum is σ = 324295208344800. Its totient is φ = 53327911365120.

The previous prime is 161065662707227. The next prime is 161065662707263. The reversal of 161065662707238 is 832707266560161.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186433806 + ... + 187295742.

It is an arithmetic number, because the mean of its divisors is an integer number (10134225260775).

Almost surely, 2^{161065662707238} is an apocalyptic number.

161065662707238 is an abundant number, since it is smaller than the sum of its proper divisors (163229545637562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161065662707238 is a wasteful number, since it uses less digits than its factorization.

161065662707238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071112.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 161065662707238 in words is "one hundred sixty-one trillion, sixty-five billion, six hundred sixty-two million, seven hundred seven thousand, two hundred thirty-eight".