11644663606 has 32 divisors (see below), whose sum is σ = 18734869440. Its totient is φ = 5414086656.

The previous prime is 11644663577. The next prime is 11644663609. The reversal of 11644663606 is 60636644611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644663609) 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 15 ways as a sum of consecutive naturals, for example, 2818150 + ... + 2822278.

It is an arithmetic number, because the mean of its divisors is an integer number (585464670).

Almost surely, 2^11644663606 is an apocalyptic number.

11644663606 is a deficient number, since it is larger than the sum of its proper divisors (7090205834).

11644663606 is a wasteful number, since it uses less digits than its factorization.

11644663606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5848.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 11644663606 in words is "eleven billion, six hundred forty-four million, six hundred sixty-three thousand, six hundred six".