163513661538800 has 60 divisors (see below), whose sum is σ = 401977422397320. Its totient is φ = 63884407292160.

The previous prime is 163513661538781. The next prime is 163513661538823. The reversal of 163513661538800 is 8835166315361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4753286915 + ... + 4753321314.

It is an arithmetic number, because the mean of its divisors is an integer number (6699623706622).

Almost surely, 2^{163513661538800} is an apocalyptic number.

163513661538800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163513661538800 is an abundant number, since it is smaller than the sum of its proper divisors (238463760858520).

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

163513661538800 is a wasteful number, since it uses less digits than its factorization.

163513661538800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506608290 (or 9506608279 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 163513661538800 in words is "one hundred sixty-three trillion, five hundred thirteen billion, six hundred sixty-one million, five hundred thirty-eight thousand, eight hundred".