165750940322 has 18 divisors (see below), whose sum is σ = 273294017787. Its totient is φ = 75338457700.

The previous prime is 165750940309. The next prime is 165750940339. The reversal of 165750940322 is 223049057561.

It can be written as a sum of positive squares in only one way, i.e., 82875470161 + 82875470161 = 287881^2 + 287881^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=287881.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6320297 + ... + 6346467.

Almost surely, 2^165750940322 is an apocalyptic number.

165750940322 is a deficient number, since it is larger than the sum of its proper divisors (107543077465).

165750940322 is an frugal number, since it uses more digits than its factorization.

165750940322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52366 (or 26184 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 44.

Adding to 165750940322 its reverse (223049057561), we get a palindrome (388799997883).

The spelling of 165750940322 in words is "one hundred sixty-five billion, seven hundred fifty million, nine hundred forty thousand, three hundred twenty-two".