16561067116067 has 4 divisors (see below), whose sum is σ = 16561254147360. Its totient is φ = 16560880084776.

The previous prime is 16561067116031. The next prime is 16561067116079. The reversal of 16561067116067 is 76061176016561.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16561067116067 - 2³⁸ = 16286189209123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16561067116667) 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 3 ways as a sum of consecutive naturals, for example, 93382763 + ... + 93559940.

It is an arithmetic number, because the mean of its divisors is an integer number (4140313536840).

Almost surely, 2^{16561067116067} is an apocalyptic number.

16561067116067 is a deficient number, since it is larger than the sum of its proper divisors (187031293).

16561067116067 is an equidigital number, since it uses as much as digits as its factorization.

16561067116067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187031292.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 16561067116067 in words is "sixteen trillion, five hundred sixty-one billion, sixty-seven million, one hundred sixteen thousand, sixty-seven".