11155782128 has 20 divisors (see below), whose sum is σ = 21887929440. Its totient is φ = 5507284224.

The previous prime is 11155782119. The next prime is 11155782139. The reversal of 11155782128 is 82128755111.

It is a happy number.

It is a congruent number.

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, 4411625 + ... + 4414152.

It is an arithmetic number, because the mean of its divisors is an integer number (1094396472).

Almost surely, 2^11155782128 is an apocalyptic number.

It is an amenable number.

11155782128 is a deficient number, since it is larger than the sum of its proper divisors (10732147312).

11155782128 is an equidigital number, since it uses as much as digits as its factorization.

11155782128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825864 (or 8825858 counting only the distinct ones).

The product of its digits is 44800, while the sum is 41.

The spelling of 11155782128 in words is "eleven billion, one hundred fifty-five million, seven hundred eighty-two thousand, one hundred twenty-eight".