11511225143 has 4 divisors (see below), whose sum is σ = 12557700168. Its totient is φ = 10464750120.

The previous prime is 11511225073. The next prime is 11511225151. The reversal of 11511225143 is 34152211511.

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

It is not a de Polignac number, because 11511225143 - 2¹² = 11511221047 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 (11511225163) 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, 523237496 + ... + 523237517.

It is an arithmetic number, because the mean of its divisors is an integer number (3139425042).

Almost surely, 2^11511225143 is an apocalyptic number.

11511225143 is a deficient number, since it is larger than the sum of its proper divisors (1046475025).

11511225143 is a wasteful number, since it uses less digits than its factorization.

11511225143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046475024.

The product of its digits is 1200, while the sum is 26.

Adding to 11511225143 its reverse (34152211511), we get a palindrome (45663436654).

The spelling of 11511225143 in words is "eleven billion, five hundred eleven million, two hundred twenty-five thousand, one hundred forty-three".