11051756521 has 12 divisors (see below), whose sum is σ = 12083492928. Its totient is φ = 10102560624.

The previous prime is 11051756509. The next prime is 11051756531. The reversal of 11051756521 is 12565715011.

It is not a de Polignac number, because 11051756521 - 2²⁵ = 11018202089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11051756531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300045 + ... + 334858.

It is an arithmetic number, because the mean of its divisors is an integer number (1006957744).

Almost surely, 2^11051756521 is an apocalyptic number.

It is an amenable number.

11051756521 is a deficient number, since it is larger than the sum of its proper divisors (1031736407).

11051756521 is a wasteful number, since it uses less digits than its factorization.

11051756521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635032 (or 635019 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 34.

The spelling of 11051756521 in words is "eleven billion, fifty-one million, seven hundred fifty-six thousand, five hundred twenty-one".