11155012644 has 12 divisors (see below), whose sum is σ = 26028362864. Its totient is φ = 3718337544.

The previous prime is 11155012637. The next prime is 11155012667. The reversal of 11155012644 is 44621055111.

11155012644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 464792182 + ... + 464792205.

Almost surely, 2^11155012644 is an apocalyptic number.

It is an amenable number.

11155012644 is an abundant number, since it is smaller than the sum of its proper divisors (14873350220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11155012644 is a wasteful number, since it uses less digits than its factorization.

11155012644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929584394 (or 929584392 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 11155012644 its reverse (44621055111), we get a palindrome (55776067755).

The spelling of 11155012644 in words is "eleven billion, one hundred fifty-five million, twelve thousand, six hundred forty-four".