16163527711321 has 9 divisors (see below), whose sum is σ = 16371040910133. Its totient is φ = 15958612504380.

The previous prime is 16163527711319. The next prime is 16163527711363. The reversal of 16163527711321 is 12311772536161.

It is a happy number.

The square root of 16163527711321 is 4020389.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 16163527711321 - 2¹ = 16163527711319 is a prime.

It is a super-2 number, since 2×16163527711321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16163527711301) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 317585286 + ... + 317636176.

Almost surely, 2^{16163527711321} is an apocalyptic number.

16163527711321 is the 4020389-th square number.

16163527711321 is the 2010195-th centered octagonal number.

It is an amenable number.

16163527711321 is a deficient number, since it is larger than the sum of its proper divisors (207513198812).

16163527711321 is an frugal number, since it uses more digits than its factorization.

16163527711321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101940 (or 50970 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The spelling of 16163527711321 in words is "sixteen trillion, one hundred sixty-three billion, five hundred twenty-seven million, seven hundred eleven thousand, three hundred twenty-one".