165536011111 has 16 divisors (see below), whose sum is σ = 172037606400. Its totient is φ = 159158438208.

The previous prime is 165536011097. The next prime is 165536011153. The reversal of 165536011111 is 111110635561.

It is a cyclic number.

It is not a de Polignac number, because 165536011111 - 2²⁹ = 164999140199 is a prime.

It is a super-2 number, since 2×165536011111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165536011181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4125795 + ... + 4165723.

It is an arithmetic number, because the mean of its divisors is an integer number (10752350400).

Almost surely, 2^165536011111 is an apocalyptic number.

165536011111 is a deficient number, since it is larger than the sum of its proper divisors (6501595289).

165536011111 is a wasteful number, since it uses less digits than its factorization.

165536011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41478.

The product of its (nonzero) digits is 2700, while the sum is 31.

Adding to 165536011111 its reverse (111110635561), we get a palindrome (276646646672).

The spelling of 165536011111 in words is "one hundred sixty-five billion, five hundred thirty-six million, eleven thousand, one hundred eleven".