11163218128 has 20 divisors (see below), whose sum is σ = 21786613380. Its totient is φ = 5540866304.

The previous prime is 11163218093. The next prime is 11163218149. The reversal of 11163218128 is 82181236111.

It can be written as a sum of positive squares in 2 ways, for example, as 5605217424 + 5558000704 = 74868^2 + 74552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11163218093 and 11163218102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2544163 + ... + 2548546.

It is an arithmetic number, because the mean of its divisors is an integer number (1089330669).

Almost surely, 2^11163218128 is an apocalyptic number.

It is an amenable number.

11163218128 is a deficient number, since it is larger than the sum of its proper divisors (10623395252).

11163218128 is a wasteful number, since it uses less digits than its factorization.

11163218128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5092854 (or 5092848 counting only the distinct ones).

The product of its digits is 4608, while the sum is 34.

The spelling of 11163218128 in words is "eleven billion, one hundred sixty-three million, two hundred eighteen thousand, one hundred twenty-eight".