165435321411 has 12 divisors (see below), whose sum is σ = 245420567392. Its totient is φ = 107309397456.

The previous prime is 165435321391. The next prime is 165435321509. The reversal of 165435321411 is 114123534561.

165435321411 is a `hidden beast` number, since 1 + 6 + 5 + 435 + 3 + 214 + 1 + 1 = 666.

It is not a de Polignac number, because 165435321411 - 2¹⁹ = 165434797123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165435322411) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 248401051 + ... + 248401716.

Almost surely, 2^165435321411 is an apocalyptic number.

165435321411 is a deficient number, since it is larger than the sum of its proper divisors (79985245981).

165435321411 is a wasteful number, since it uses less digits than its factorization.

165435321411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496802810 (or 496802807 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 165435321411 its reverse (114123534561), we get a palindrome (279558855972).

The spelling of 165435321411 in words is "one hundred sixty-five billion, four hundred thirty-five million, three hundred twenty-one thousand, four hundred eleven".