11143536523 has 4 divisors (see below), whose sum is σ = 12735470320. Its totient is φ = 9551602728.

The previous prime is 11143536511. The next prime is 11143536527. The reversal of 11143536523 is 32563534111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32563534111 = 91997 ⋅353963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11143536523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11143536527) 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, 795966888 + ... + 795966901.

It is an arithmetic number, because the mean of its divisors is an integer number (3183867580).

Almost surely, 2^11143536523 is an apocalyptic number.

11143536523 is a deficient number, since it is larger than the sum of its proper divisors (1591933797).

11143536523 is an equidigital number, since it uses as much as digits as its factorization.

11143536523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591933796.

The product of its digits is 32400, while the sum is 34.

The spelling of 11143536523 in words is "eleven billion, one hundred forty-three million, five hundred thirty-six thousand, five hundred twenty-three".