163220436324 has 144 divisors (see below), whose sum is σ = 460784024064. Its totient is φ = 48299328000.

The previous prime is 163220436317. The next prime is 163220436341. The reversal of 163220436324 is 423634022361.

163220436324 is a `hidden beast` number, since 1 + 6 + 322 + 0 + 4 + 3 + 6 + 324 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2891757 + ... + 2947659.

It is an arithmetic number, because the mean of its divisors is an integer number (3199889056).

Almost surely, 2^163220436324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163220436324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230392012032).

163220436324 is an abundant number, since it is smaller than the sum of its proper divisors (297563587740).

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

163220436324 is a wasteful number, since it uses less digits than its factorization.

163220436324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56098 (or 56093 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 163220436324 its reverse (423634022361), we get a palindrome (586854458685).

The spelling of 163220436324 in words is "one hundred sixty-three billion, two hundred twenty million, four hundred thirty-six thousand, three hundred twenty-four".