11701782128 has 30 divisors (see below), whose sum is σ = 23662146984. Its totient is φ = 5595512032.

The previous prime is 11701782121. The next prime is 11701782163. The reversal of 11701782128 is 82128710711.

11701782128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11701782091 and 11701782100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11701782121) 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 5 ways as a sum of consecutive naturals, for example, 2072333 + ... + 2077971.

Almost surely, 2^11701782128 is an apocalyptic number.

It is an amenable number.

11701782128 is an abundant number, since it is smaller than the sum of its proper divisors (11960364856).

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

11701782128 is an frugal number, since it uses more digits than its factorization.

11701782128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11309 (or 5664 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 38.

The spelling of 11701782128 in words is "eleven billion, seven hundred one million, seven hundred eighty-two thousand, one hundred twenty-eight".