165146116024423 has 4 divisors (see below), whose sum is σ = 168262080477768. Its totient is φ = 162030151571080.

The previous prime is 165146116024397. The next prime is 165146116024489. The reversal of 165146116024423 is 324420611641561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165146116024423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165146116024223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1557982226593 + ... + 1557982226698.

It is an arithmetic number, because the mean of its divisors is an integer number (42065520119442).

Almost surely, 2^{165146116024423} is an apocalyptic number.

165146116024423 is a deficient number, since it is larger than the sum of its proper divisors (3115964453345).

165146116024423 is an equidigital number, since it uses as much as digits as its factorization.

165146116024423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115964453344.

The product of its (nonzero) digits is 829440, while the sum is 46.

Adding to 165146116024423 its reverse (324420611641561), we get a palindrome (489566727665984).

The spelling of 165146116024423 in words is "one hundred sixty-five trillion, one hundred forty-six billion, one hundred sixteen million, twenty-four thousand, four hundred twenty-three".