163520232873330 has 128 divisors (see below), whose sum is σ = 408591609984000. Its totient is φ = 41831091154944.

The previous prime is 163520232873329. The next prime is 163520232873341. The reversal of 163520232873330 is 33378232025361.

It is a self number, because there is not a number n which added to its sum of digits gives 163520232873330.

It is an unprimeable number.

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 in 63 ways as a sum of consecutive naturals, for example, 3612646279 + ... + 3612691541.

It is an arithmetic number, because the mean of its divisors is an integer number (3192121953000).

Almost surely, 2^{163520232873330} is an apocalyptic number.

163520232873330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163520232873330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204295804992000).

163520232873330 is an abundant number, since it is smaller than the sum of its proper divisors (245071377110670).

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

163520232873330 is a wasteful number, since it uses less digits than its factorization.

163520232873330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71908.

The product of its (nonzero) digits is 3265920, while the sum is 48.

Adding to 163520232873330 its reverse (33378232025361), we get a palindrome (196898464898691).

The spelling of 163520232873330 in words is "one hundred sixty-three trillion, five hundred twenty billion, two hundred thirty-two million, eight hundred seventy-three thousand, three hundred thirty".