11163555887 has 32 divisors (see below), whose sum is σ = 13283827200. Its totient is φ = 9267350400.

The previous prime is 11163555883. The next prime is 11163555889. The reversal of 11163555887 is 78855536111.

11163555887 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 11163555887 - 2² = 11163555883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11163555883) 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, 4829462 + ... + 4831772.

It is an arithmetic number, because the mean of its divisors is an integer number (415119600).

Almost surely, 2^11163555887 is an apocalyptic number.

11163555887 is a deficient number, since it is larger than the sum of its proper divisors (2120271313).

11163555887 is a wasteful number, since it uses less digits than its factorization.

11163555887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167.

The product of its digits is 1008000, while the sum is 50.

The spelling of 11163555887 in words is "eleven billion, one hundred sixty-three million, five hundred fifty-five thousand, eight hundred eighty-seven".