16165111156161 has 8 divisors (see below), whose sum is σ = 23512888954464. Its totient is φ = 9797037064320.

The previous prime is 16165111156157. The next prime is 16165111156219.

16165111156161 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16165111156161 - 2² = 16165111156157 is a prime.

It is a super-2 number, since 2×16165111156161² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16165111156111) 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, 244925926576 + ... + 244925926641.

It is an arithmetic number, because the mean of its divisors is an integer number (2939111119308).

Almost surely, 2^{16165111156161} is an apocalyptic number.

16165111156161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16165111156161 is a deficient number, since it is larger than the sum of its proper divisors (7347777798303).

16165111156161 is a wasteful number, since it uses less digits than its factorization.

16165111156161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489851853231.

The product of its digits is 32400, while the sum is 42.

The spelling of 16165111156161 in words is "sixteen trillion, one hundred sixty-five billion, one hundred eleven million, one hundred fifty-six thousand, one hundred sixty-one".