16511056011165 has 16 divisors (see below), whose sum is σ = 26418275410176. Its totient is φ = 8805701275200.

The previous prime is 16511056011161. The next prime is 16511056011167. The reversal of 16511056011165 is 56111065011561.

It is not a de Polignac number, because 16511056011165 - 2² = 16511056011161 is a prime.

It is a super-2 number, since 2×16511056011165² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16511056011161) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11503701 + ... + 12859130.

It is an arithmetic number, because the mean of its divisors is an integer number (1651142213136).

Almost surely, 2^{16511056011165} is an apocalyptic number.

16511056011165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16511056011165 is a deficient number, since it is larger than the sum of its proper divisors (9907219399011).

16511056011165 is a wasteful number, since it uses less digits than its factorization.

16511056011165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24408020.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 16511056011165 in words is "sixteen trillion, five hundred eleven billion, fifty-six million, eleven thousand, one hundred sixty-five".