165747317323 has 48 divisors (see below), whose sum is σ = 208872953856. Its totient is φ = 128579140800.

The previous prime is 165747317299. The next prime is 165747317353. The reversal of 165747317323 is 323713747561.

It is not a de Polignac number, because 165747317323 - 2⁹ = 165747316811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165747317353) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70499598 + ... + 70501948.

It is an arithmetic number, because the mean of its divisors is an integer number (4351519872).

Almost surely, 2^165747317323 is an apocalyptic number.

165747317323 is a deficient number, since it is larger than the sum of its proper divisors (43125636533).

165747317323 is a wasteful number, since it uses less digits than its factorization.

165747317323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3613 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 49.

The spelling of 165747317323 in words is "one hundred sixty-five billion, seven hundred forty-seven million, three hundred seventeen thousand, three hundred twenty-three".