11205524543 has 4 divisors (see below), whose sum is σ = 11205931968. Its totient is φ = 11205117120.

The previous prime is 11205524509. The next prime is 11205524549. The reversal of 11205524543 is 34542550211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11205524543 - 2⁸ = 11205524287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11205524549) 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, 159218 + ... + 218543.

It is an arithmetic number, because the mean of its divisors is an integer number (2801482992).

Almost surely, 2^11205524543 is an apocalyptic number.

11205524543 is a deficient number, since it is larger than the sum of its proper divisors (407425).

11205524543 is an equidigital number, since it uses as much as digits as its factorization.

11205524543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407424.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 11205524543 in words is "eleven billion, two hundred five million, five hundred twenty-four thousand, five hundred forty-three".