11543550443 has 32 divisors (see below), whose sum is σ = 12590774784. Its totient is φ = 10543882752.

The previous prime is 11543550437. The next prime is 11543550481. The reversal of 11543550443 is 34405534511.

It is a cyclic number.

It is not a de Polignac number, because 11543550443 - 2⁶ = 11543550379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11543550433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23703146 + ... + 23703632.

It is an arithmetic number, because the mean of its divisors is an integer number (393461712).

Almost surely, 2^11543550443 is an apocalyptic number.

11543550443 is a deficient number, since it is larger than the sum of its proper divisors (1047224341).

11543550443 is a wasteful number, since it uses less digits than its factorization.

11543550443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 11543550443 in words is "eleven billion, five hundred forty-three million, five hundred fifty thousand, four hundred forty-three".