16563775374775 has 12 divisors (see below), whose sum is σ = 20926611305352. Its totient is φ = 13001001047840.

The previous prime is 16563775374743. The next prime is 16563775374803. The reversal of 16563775374775 is 57747357736561.

It is not a de Polignac number, because 16563775374775 - 2⁵ = 16563775374743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16563775374698 and 16563775374707.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6250479949 + ... + 6250482598.

It is an arithmetic number, because the mean of its divisors is an integer number (1743884275446).

Almost surely, 2^{16563775374775} is an apocalyptic number.

16563775374775 is a deficient number, since it is larger than the sum of its proper divisors (4362835930577).

16563775374775 is a wasteful number, since it uses less digits than its factorization.

16563775374775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500962610 (or 12500962605 counting only the distinct ones).

The product of its digits is 2722734000, while the sum is 73.

The spelling of 16563775374775 in words is "sixteen trillion, five hundred sixty-three billion, seven hundred seventy-five million, three hundred seventy-four thousand, seven hundred seventy-five".