163523322437 has 4 divisors (see below), whose sum is σ = 163524508800. Its totient is φ = 163522136076.

The previous prime is 163523322377. The next prime is 163523322533. The reversal of 163523322437 is 734223325361.

163523322437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 734223325361 = 307 ⋅2391606923.

It is a cyclic number.

It is not a de Polignac number, because 163523322437 - 2⁸ = 163523322181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163523322394 and 163523322403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163523322637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354383 + ... + 672780.

It is an arithmetic number, because the mean of its divisors is an integer number (40881127200).

Almost surely, 2^163523322437 is an apocalyptic number.

It is an amenable number.

163523322437 is a deficient number, since it is larger than the sum of its proper divisors (1186363).

163523322437 is a wasteful number, since it uses less digits than its factorization.

163523322437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186362.

The product of its digits is 544320, while the sum is 41.

Adding to 163523322437 its reverse (734223325361), we get a palindrome (897746647798).

The spelling of 163523322437 in words is "one hundred sixty-three billion, five hundred twenty-three million, three hundred twenty-two thousand, four hundred thirty-seven".