216423524342 has 4 divisors (see below), whose sum is σ = 324635286516. Its totient is φ = 108211762170.

The previous prime is 216423524311. The next prime is 216423524347. The reversal of 216423524342 is 243425324612.

216423524342 is digitally balanced in base 3, 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.

It is a super-2 number, since 2×216423524342² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216423524296 and 216423524305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216423524347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54105881084 + ... + 54105881087.

It is an arithmetic number, because the mean of its divisors is an integer number (81158821629).

Almost surely, 2^216423524342 is an apocalyptic number.

216423524342 is a deficient number, since it is larger than the sum of its proper divisors (108211762174).

216423524342 is a wasteful number, since it uses less digits than its factorization.

216423524342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108211762173.

The product of its digits is 276480, while the sum is 38.

Adding to 216423524342 its reverse (243425324612), we get a palindrome (459848848954).

The spelling of 216423524342 in words is "two hundred sixteen billion, four hundred twenty-three million, five hundred twenty-four thousand, three hundred forty-two".