11451143543 has 24 divisors (see below), whose sum is σ = 14140947600. Its totient is φ = 9213888768.

The previous prime is 11451143533. The next prime is 11451143563. The reversal of 11451143543 is 34534115411.

It is not a de Polignac number, because 11451143543 - 2²⁰ = 11450094967 is a prime.

It is a super-2 number, since 2×11451143543² (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 (11451143533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 306368 + ... + 341706.

It is an arithmetic number, because the mean of its divisors is an integer number (589206150).

Almost surely, 2^11451143543 is an apocalyptic number.

11451143543 is a deficient number, since it is larger than the sum of its proper divisors (2689804057).

11451143543 is a wasteful number, since it uses less digits than its factorization.

11451143543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35759 (or 35752 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

Adding to 11451143543 its reverse (34534115411), we get a palindrome (45985258954).

The spelling of 11451143543 in words is "eleven billion, four hundred fifty-one million, one hundred forty-three thousand, five hundred forty-three".