11391126720 has 56 divisors (see below), whose sum is σ = 36166830384. Its totient is φ = 3037633536.

The previous prime is 11391126701. The next prime is 11391126727. The reversal of 11391126720 is 2762119311.

11391126720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11391126727) 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 7 ways as a sum of consecutive naturals, for example, 5931919 + ... + 5933838.

Almost surely, 2^11391126720 is an apocalyptic number.

11391126720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11391126720 is an abundant number, since it is smaller than the sum of its proper divisors (24775703664).

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

11391126720 is a wasteful number, since it uses less digits than its factorization.

11391126720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11865777 (or 11865767 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The spelling of 11391126720 in words is "eleven billion, three hundred ninety-one million, one hundred twenty-six thousand, seven hundred twenty".