11568540213 has 12 divisors (see below), whose sum is σ = 17161738828. Its totient is φ = 7503917760.

The previous prime is 11568540211. The next prime is 11568540223. The reversal of 11568540213 is 31204586511.

11568540213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9537866244 + 2030673969 = 97662^2 + 45063^2 .

It is not a de Polignac number, because 11568540213 - 2¹ = 11568540211 is a prime.

It is a super-2 number, since 2×11568540213² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11568540211) 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 11 ways as a sum of consecutive naturals, for example, 17369848 + ... + 17370513.

Almost surely, 2^11568540213 is an apocalyptic number.

It is an amenable number.

11568540213 is a deficient number, since it is larger than the sum of its proper divisors (5593198615).

11568540213 is a wasteful number, since it uses less digits than its factorization.

11568540213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34740404 (or 34740401 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 11568540213 in words is "eleven billion, five hundred sixty-eight million, five hundred forty thousand, two hundred thirteen".