11543454103 has 4 divisors (see below), whose sum is σ = 11811906568. Its totient is φ = 11275001640.

The previous prime is 11543454079. The next prime is 11543454119. The reversal of 11543454103 is 30145434511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30145434511 = 61 ⋅494187451.

It is a cyclic number.

It is not a de Polignac number, because 11543454103 - 2²⁵ = 11509899671 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 (11543454193) 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, 134226168 + ... + 134226253.

It is an arithmetic number, because the mean of its divisors is an integer number (2952976642).

Almost surely, 2^11543454103 is an apocalyptic number.

11543454103 is a deficient number, since it is larger than the sum of its proper divisors (268452465).

11543454103 is an equidigital number, since it uses as much as digits as its factorization.

11543454103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268452464.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 11543454103 its reverse (30145434511), we get a palindrome (41688888614).

The spelling of 11543454103 in words is "eleven billion, five hundred forty-three million, four hundred fifty-four thousand, one hundred three".