165145653442111 has 16 divisors (see below), whose sum is σ = 170961921298080. Its totient is φ = 159420821091840.

The previous prime is 165145653442103. The next prime is 165145653442151. The reversal of 165145653442111 is 111244356541561.

165145653442111 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 165145653442111 - 2³ = 165145653442103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165145653442151) 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, 1214950 + ... + 18214483.

It is an arithmetic number, because the mean of its divisors is an integer number (10685120081130).

Almost surely, 2^{165145653442111} is an apocalyptic number.

165145653442111 is a deficient number, since it is larger than the sum of its proper divisors (5816267855969).

165145653442111 is a wasteful number, since it uses less digits than its factorization.

165145653442111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19431786.

The product of its digits is 1728000, while the sum is 49.

The spelling of 165145653442111 in words is "one hundred sixty-five trillion, one hundred forty-five billion, six hundred fifty-three million, four hundred forty-two thousand, one hundred eleven".