165417404522 has 8 divisors (see below), whose sum is σ = 254177963172. Its totient is φ = 80691416800.

The previous prime is 165417404521. The next prime is 165417404533. The reversal of 165417404522 is 225404714561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165412210681 + 5193841 = 406709^2 + 2279^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 165417404522.

It is not an unprimeable number, because it can be changed into a prime (165417404521) 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, 1008642629 + ... + 1008642792.

Almost surely, 2^165417404522 is an apocalyptic number.

165417404522 is a deficient number, since it is larger than the sum of its proper divisors (88760558650).

165417404522 is a wasteful number, since it uses less digits than its factorization.

165417404522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017285464.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 165417404522 in words is "one hundred sixty-five billion, four hundred seventeen million, four hundred four thousand, five hundred twenty-two".