11115500656 has 40 divisors (see below), whose sum is σ = 23207636144. Its totient is φ = 5126976000.

The previous prime is 11115500639. The next prime is 11115500657. The reversal of 11115500656 is 65600551111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115500657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328531 + ... + 360781.

Almost surely, 2^11115500656 is an apocalyptic number.

11115500656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11115500656 is an abundant number, since it is smaller than the sum of its proper divisors (12092135488).

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

11115500656 is a wasteful number, since it uses less digits than its factorization.

11115500656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33929 (or 33923 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 11115500656 in words is "eleven billion, one hundred fifteen million, five hundred thousand, six hundred fifty-six".