11909784844 has 12 divisors (see below), whose sum is σ = 21560817600. Its totient is φ = 5749551248.

The previous prime is 11909784841. The next prime is 11909784853. The reversal of 11909784844 is 44848790911.

It is not an unprimeable number, because it can be changed into a prime (11909784841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51335164 + ... + 51335395.

It is an arithmetic number, because the mean of its divisors is an integer number (1796734800).

Almost surely, 2^11909784844 is an apocalyptic number.

It is an amenable number.

11909784844 is a deficient number, since it is larger than the sum of its proper divisors (9651032756).

11909784844 is a wasteful number, since it uses less digits than its factorization.

11909784844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102670592 (or 102670590 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 11909784844 in words is "eleven billion, nine hundred nine million, seven hundred eighty-four thousand, eight hundred forty-four".