165417932213 has 4 divisors (see below), whose sum is σ = 165594473100. Its totient is φ = 165241391328.

The previous prime is 165417932189. The next prime is 165417932227. The reversal of 165417932213 is 312239714561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10262297809 + 155155634404 = 101303^2 + 393898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165417932213 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 (165417932243) 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, 88269038 + ... + 88270911.

It is an arithmetic number, because the mean of its divisors is an integer number (41398618275).

Almost surely, 2^165417932213 is an apocalyptic number.

It is an amenable number.

165417932213 is a deficient number, since it is larger than the sum of its proper divisors (176540887).

165417932213 is an equidigital number, since it uses as much as digits as its factorization.

165417932213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176540886.

The product of its digits is 272160, while the sum is 44.

The spelling of 165417932213 in words is "one hundred sixty-five billion, four hundred seventeen million, nine hundred thirty-two thousand, two hundred thirteen".