11056566520 has 32 divisors (see below), whose sum is σ = 24884607600. Its totient is φ = 4421323008.

The previous prime is 11056566517. The next prime is 11056566541. The reversal of 11056566520 is 2566565011.

It is a super-2 number, since 2×11056566520² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11056566520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102916 + ... + 180844.

Almost surely, 2^11056566520 is an apocalyptic number.

11056566520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11056566520 is an abundant number, since it is smaller than the sum of its proper divisors (13828041080).

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

11056566520 is a wasteful number, since it uses less digits than its factorization.

11056566520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81487 (or 81483 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 11056566520 in words is "eleven billion, fifty-six million, five hundred sixty-six thousand, five hundred twenty".