165141751161 has 4 divisors (see below), whose sum is σ = 220189001552. Its totient is φ = 110094500772.

The previous prime is 165141751121. The next prime is 165141751189. The reversal of 165141751161 is 161157141561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165141751161 - 2⁹ = 165141750649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165141751121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27523625191 + ... + 27523625196.

It is an arithmetic number, because the mean of its divisors is an integer number (55047250388).

Almost surely, 2^165141751161 is an apocalyptic number.

It is an amenable number.

165141751161 is a deficient number, since it is larger than the sum of its proper divisors (55047250391).

165141751161 is an equidigital number, since it uses as much as digits as its factorization.

165141751161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55047250390.

The product of its digits is 25200, while the sum is 39.

The spelling of 165141751161 in words is "one hundred sixty-five billion, one hundred forty-one million, seven hundred fifty-one thousand, one hundred sixty-one".