11056543543 has 2 divisors, whose sum is σ = 11056543544. Its totient is φ = 11056543542.

The previous prime is 11056543541. The next prime is 11056543559. The reversal of 11056543543 is 34534565011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11056543543 - 2¹ = 11056543541 is a prime.

Together with 11056543541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11056543541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528271771 + 5528271772.

It is an arithmetic number, because the mean of its divisors is an integer number (5528271772).

Almost surely, 2^11056543543 is an apocalyptic number.

11056543543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11056543543 is an equidigital number, since it uses as much as digits as its factorization.

11056543543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 11056543543 in words is "eleven billion, fifty-six million, five hundred forty-three thousand, five hundred forty-three".