11955055911 has 32 divisors (see below), whose sum is σ = 17856495360. Its totient is φ = 7070224896.

The previous prime is 11955055909. The next prime is 11955055969.

11955055911 is nontrivially palindromic in base 10.

11955055911 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 11955055911 - 2¹ = 11955055909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955055111) 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 31 ways as a sum of consecutive naturals, for example, 159580 + ... + 222206.

It is an arithmetic number, because the mean of its divisors is an integer number (558015480).

Almost surely, 2^11955055911 is an apocalyptic number.

11955055911 is a deficient number, since it is larger than the sum of its proper divisors (5901439449).

11955055911 is a wasteful number, since it uses less digits than its factorization.

11955055911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62863.

The product of its (nonzero) digits is 50625, while the sum is 42.

The spelling of 11955055911 in words is "eleven billion, nine hundred fifty-five million, fifty-five thousand, nine hundred eleven".