11717808667 has 4 divisors (see below), whose sum is σ = 11751384400. Its totient is φ = 11684232936.

The previous prime is 11717808659. The next prime is 11717808677. The reversal of 11717808667 is 76680871711.

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 11717808667 - 2³ = 11717808659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11717808677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16787343 + ... + 16788040.

It is an arithmetic number, because the mean of its divisors is an integer number (2937846100).

Almost surely, 2^11717808667 is an apocalyptic number.

11717808667 is a deficient number, since it is larger than the sum of its proper divisors (33575733).

11717808667 is an equidigital number, since it uses as much as digits as its factorization.

11717808667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33575732.

The product of its (nonzero) digits is 790272, while the sum is 52.

The spelling of 11717808667 in words is "eleven billion, seven hundred seventeen million, eight hundred eight thousand, six hundred sixty-seven".