11011881128 has 16 divisors (see below), whose sum is σ = 20655977280. Its totient is φ = 5503620528.

The previous prime is 11011881119. The next prime is 11011881157. The reversal of 11011881128 is 82118811011.

It is a junction number, because it is equal to n+sod(n) for n = 11011881094 and 11011881103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269750 + ... + 307877.

It is an arithmetic number, because the mean of its divisors is an integer number (1290998580).

Almost surely, 2^11011881128 is an apocalyptic number.

It is an amenable number.

11011881128 is a deficient number, since it is larger than the sum of its proper divisors (9644096152).

11011881128 is a wasteful number, since it uses less digits than its factorization.

11011881128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580016 (or 580012 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 32.

The spelling of 11011881128 in words is "eleven billion, eleven million, eight hundred eighty-one thousand, one hundred twenty-eight".