16535043173117 has 16 divisors (see below), whose sum is σ = 19365446111232. Its totient is φ = 13825811205360.

The previous prime is 16535043173111. The next prime is 16535043173119. The reversal of 16535043173117 is 71137134053561.

It is not a de Polignac number, because 16535043173117 - 2¹⁰ = 16535043172093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16535043173111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171097109 + ... + 171193722.

It is an arithmetic number, because the mean of its divisors is an integer number (1210340381952).

Almost surely, 2^{16535043173117} is an apocalyptic number.

It is an amenable number.

16535043173117 is a deficient number, since it is larger than the sum of its proper divisors (2830402938115).

16535043173117 is a wasteful number, since it uses less digits than its factorization.

16535043173117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342291008.

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 16535043173117 in words is "sixteen trillion, five hundred thirty-five billion, forty-three million, one hundred seventy-three thousand, one hundred seventeen".