11684369649 has 4 divisors (see below), whose sum is σ = 15579159536. Its totient is φ = 7789579764.

The previous prime is 11684369621. The next prime is 11684369689. The reversal of 11684369649 is 94696348611.

11684369649 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11684369649 - 2¹⁶ = 11684304113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11684369689) 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, 1947394939 + ... + 1947394944.

It is an arithmetic number, because the mean of its divisors is an integer number (3894789884).

Almost surely, 2^11684369649 is an apocalyptic number.

It is an amenable number.

11684369649 is a deficient number, since it is larger than the sum of its proper divisors (3894789887).

11684369649 is an equidigital number, since it uses as much as digits as its factorization.

11684369649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894789886.

The product of its digits is 6718464, while the sum is 57.

The spelling of 11684369649 in words is "eleven billion, six hundred eighty-four million, three hundred sixty-nine thousand, six hundred forty-nine".