11663904911 has 8 divisors (see below), whose sum is σ = 11840493744. Its totient is φ = 11487389760.

The previous prime is 11663904859. The next prime is 11663904913. The reversal of 11663904911 is 11940936611.

It is a happy number.

11663904911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11663904911 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 (11663904913) 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 7 ways as a sum of consecutive naturals, for example, 358331 + ... + 389523.

It is an arithmetic number, because the mean of its divisors is an integer number (1480061718).

Almost surely, 2^11663904911 is an apocalyptic number.

11663904911 is a deficient number, since it is larger than the sum of its proper divisors (176588833).

11663904911 is an equidigital number, since it uses as much as digits as its factorization.

11663904911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36841.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 11663904911 in words is "eleven billion, six hundred sixty-three million, nine hundred four thousand, nine hundred eleven".