11515051056 has 20 divisors (see below), whose sum is σ = 29747215352. Its totient is φ = 3838350336.

The previous prime is 11515051033. The next prime is 11515051057. The reversal of 11515051056 is 65015051511.

11515051056 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 (11515051057) 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 3 ways as a sum of consecutive naturals, for example, 119948401 + ... + 119948496.

Almost surely, 2^11515051056 is an apocalyptic number.

11515051056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11515051056 is an abundant number, since it is smaller than the sum of its proper divisors (18232164296).

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

11515051056 is a wasteful number, since it uses less digits than its factorization.

11515051056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239896908 (or 239896902 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 11515051056 in words is "eleven billion, five hundred fifteen million, fifty-one thousand, fifty-six".