223638163424 has 48 divisors (see below), whose sum is σ = 489451294080. Its totient is φ = 99888007680.

The previous prime is 223638163421. The next prime is 223638163429. The reversal of 223638163424 is 424361836322.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223638163421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8657939 + ... + 8683730.

It is an arithmetic number, because the mean of its divisors is an integer number (10196901960).

Almost surely, 2^223638163424 is an apocalyptic number.

It is an amenable number.

223638163424 is an abundant number, since it is smaller than the sum of its proper divisors (265813130656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223638163424 is a wasteful number, since it uses less digits than its factorization.

223638163424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17341723 (or 17341715 counting only the distinct ones).

The product of its digits is 995328, while the sum is 44.

Adding to 223638163424 its reverse (424361836322), we get a palindrome (647999999746).

The spelling of 223638163424 in words is "two hundred twenty-three billion, six hundred thirty-eight million, one hundred sixty-three thousand, four hundred twenty-four".