11663664163 has 4 divisors (see below), whose sum is σ = 11704878808. Its totient is φ = 11622449520.

The previous prime is 11663664143. The next prime is 11663664191. The reversal of 11663664163 is 36146636611.

11663664163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11663664163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11663664143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20606898 + ... + 20607463.

It is an arithmetic number, because the mean of its divisors is an integer number (2926219702).

Almost surely, 2^11663664163 is an apocalyptic number.

11663664163 is a deficient number, since it is larger than the sum of its proper divisors (41214645).

11663664163 is an equidigital number, since it uses as much as digits as its factorization.

11663664163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41214644.

The product of its digits is 279936, while the sum is 43.

The spelling of 11663664163 in words is "eleven billion, six hundred sixty-three million, six hundred sixty-four thousand, one hundred sixty-three".