11506581056 has 28 divisors (see below), whose sum is σ = 22837079040. Its totient is φ = 5752356480.

The previous prime is 11506581043. The next prime is 11506581067. The reversal of 11506581056 is 65018560511.

11506581056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 555005 + ... + 575363.

Almost surely, 2^11506581056 is an apocalyptic number.

11506581056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11506581056 is a deficient number, since it is larger than the sum of its proper divisors (11330497984).

11506581056 is an equidigital number, since it uses as much as digits as its factorization.

11506581056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29202 (or 29192 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 11506581056 in words is "eleven billion, five hundred six million, five hundred eighty-one thousand, fifty-six".