11726606666 has 8 divisors (see below), whose sum is σ = 17616523044. Its totient is φ = 5854432320.

The previous prime is 11726606641. The next prime is 11726606687. The reversal of 11726606666 is 66660662711.

It can be written as a sum of positive squares in 2 ways, for example, as 11679341041 + 47265625 = 108071^2 + 6875^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 11726606666.

It is an unprimeable number.

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, 4433855 + ... + 4436498.

Almost surely, 2^11726606666 is an apocalyptic number.

11726606666 is a deficient number, since it is larger than the sum of its proper divisors (5889916378).

11726606666 is an equidigital number, since it uses as much as digits as its factorization.

11726606666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871016.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 11726606666 in words is "eleven billion, seven hundred twenty-six million, six hundred six thousand, six hundred sixty-six".