11919979105 has 16 divisors (see below), whose sum is σ = 14967673344. Its totient is φ = 9101946240.

The previous prime is 11919979091. The next prime is 11919979111. The reversal of 11919979105 is 50197991911.

11919979105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11919979105 - 2⁷ = 11919978977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 515419 + ... + 538048.

It is an arithmetic number, because the mean of its divisors is an integer number (935479584).

Almost surely, 2^11919979105 is an apocalyptic number.

It is an amenable number.

11919979105 is a deficient number, since it is larger than the sum of its proper divisors (3047694239).

11919979105 is a wasteful number, since it uses less digits than its factorization.

11919979105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053576.

The product of its (nonzero) digits is 229635, while the sum is 52.

The spelling of 11919979105 in words is "eleven billion, nine hundred nineteen million, nine hundred seventy-nine thousand, one hundred five".