11543562011 has 4 divisors (see below), whose sum is σ = 11562834000. Its totient is φ = 11524290024.

The previous prime is 11543562007. The next prime is 11543562047. The reversal of 11543562011 is 11026534511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11026534511 = 3217 ⋅3427583.

It is a cyclic number.

It is not a de Polignac number, because 11543562011 - 2² = 11543562007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11543562001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9635096 + ... + 9636293.

It is an arithmetic number, because the mean of its divisors is an integer number (2890708500).

Almost surely, 2^11543562011 is an apocalyptic number.

11543562011 is a deficient number, since it is larger than the sum of its proper divisors (19271989).

11543562011 is an equidigital number, since it uses as much as digits as its factorization.

11543562011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19271988.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 11543562011 in words is "eleven billion, five hundred forty-three million, five hundred sixty-two thousand, eleven".