165157175149 has 4 divisors (see below), whose sum is σ = 165325189536. Its totient is φ = 164989160764.

The previous prime is 165157175129. The next prime is 165157175159. The reversal of 165157175149 is 941571751561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165157175149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165157175096 and 165157175105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165157175129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84005719 + ... + 84007684.

It is an arithmetic number, because the mean of its divisors is an integer number (41331297384).

Almost surely, 2^165157175149 is an apocalyptic number.

It is an amenable number.

165157175149 is a deficient number, since it is larger than the sum of its proper divisors (168014387).

165157175149 is an equidigital number, since it uses as much as digits as its factorization.

165157175149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168014386.

The product of its digits is 1323000, while the sum is 52.

The spelling of 165157175149 in words is "one hundred sixty-five billion, one hundred fifty-seven million, one hundred seventy-five thousand, one hundred forty-nine".