11156500720 has 40 divisors (see below), whose sum is σ = 26775607680. Its totient is φ = 4318644480.

The previous prime is 11156500717. The next prime is 11156500759. The reversal of 11156500720 is 2700565111.

11156500720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 2246815 + ... + 2251774.

It is an arithmetic number, because the mean of its divisors is an integer number (669390192).

Almost surely, 2^11156500720 is an apocalyptic number.

11156500720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11156500720 is an abundant number, since it is smaller than the sum of its proper divisors (15619106960).

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

11156500720 is a wasteful number, since it uses less digits than its factorization.

11156500720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498633 (or 4498627 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The spelling of 11156500720 in words is "eleven billion, one hundred fifty-six million, five hundred thousand, seven hundred twenty".