165444835723 has 16 divisors (see below), whose sum is σ = 167669632000. Its totient is φ = 163233149184.

The previous prime is 165444835709. The next prime is 165444835747. The reversal of 165444835723 is 327538444561.

165444835723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 165444835723 - 2⁵ = 165444835691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165444830723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34587790 + ... + 34592572.

It is an arithmetic number, because the mean of its divisors is an integer number (10479352000).

Almost surely, 2^165444835723 is an apocalyptic number.

165444835723 is a deficient number, since it is larger than the sum of its proper divisors (2224796277).

165444835723 is a wasteful number, since it uses less digits than its factorization.

165444835723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6058.

The product of its digits is 9676800, while the sum is 52.

The spelling of 165444835723 in words is "one hundred sixty-five billion, four hundred forty-four million, eight hundred thirty-five thousand, seven hundred twenty-three".