11911840912 has 20 divisors (see below), whose sum is σ = 23294888496. Its totient is φ = 5900256800.

The previous prime is 11911840907. The next prime is 11911840949. The reversal of 11911840912 is 21904811911.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3477214 + ... + 3480637.

Almost surely, 2^11911840912 is an apocalyptic number.

It is an amenable number.

11911840912 is a deficient number, since it is larger than the sum of its proper divisors (11383047584).

11911840912 is a wasteful number, since it uses less digits than its factorization.

11911840912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6957966 (or 6957960 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 37.

The spelling of 11911840912 in words is "eleven billion, nine hundred eleven million, eight hundred forty thousand, nine hundred twelve".