11534043511 has 4 divisors (see below), whose sum is σ = 11544260800. Its totient is φ = 11523826224.

The previous prime is 11534043481. The next prime is 11534043527.

11534043511 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11534043511 - 2¹⁹ = 11533519223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11534043511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11534049511) 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, 5106951 + ... + 5109208.

It is an arithmetic number, because the mean of its divisors is an integer number (2886065200).

Almost surely, 2^11534043511 is an apocalyptic number.

11534043511 is a deficient number, since it is larger than the sum of its proper divisors (10217289).

11534043511 is a wasteful number, since it uses less digits than its factorization.

11534043511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217288.

The product of its (nonzero) digits is 3600, while the sum is 28.

It can be divided in two parts, 115340 and 43511, that added together give a palindrome (158851).

The spelling of 11534043511 in words is "eleven billion, five hundred thirty-four million, forty-three thousand, five hundred eleven".