162123617 has 4 divisors (see below), whose sum is σ = 162474240. Its totient is φ = 161772996.

The previous prime is 162123613. The next prime is 162123629. The reversal of 162123617 is 716321261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 716321261 = 19 ⋅37701119.

It is a cyclic number.

It is not a de Polignac number, because 162123617 - 2² = 162123613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162123617.

It is not an unprimeable number, because it can be changed into a prime (162123613) 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, 174617 + ... + 175542.

It is an arithmetic number, because the mean of its divisors is an integer number (40618560).

Almost surely, 2^162123617 is an apocalyptic number.

It is an amenable number.

162123617 is a deficient number, since it is larger than the sum of its proper divisors (350623).

162123617 is an equidigital number, since it uses as much as digits as its factorization.

162123617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350622.

The product of its digits is 3024, while the sum is 29.

The square root of 162123617 is about 12732.7772697083. Note that the first 3 decimals coincide. The cubic root of 162123617 is about 545.2748012356.

Adding to 162123617 its reverse (716321261), we get a palindrome (878444878).

The spelling of 162123617 in words is "one hundred sixty-two million, one hundred twenty-three thousand, six hundred seventeen".