11511578852 has 12 divisors (see below), whose sum is σ = 20400266880. Its totient is φ = 5682931176.

The previous prime is 11511578839. The next prime is 11511578857. The reversal of 11511578852 is 25887511511.

It is not an unprimeable number, because it can be changed into a prime (11511578857) 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, 18214208 + ... + 18214839.

It is an arithmetic number, because the mean of its divisors is an integer number (1700022240).

Almost surely, 2^11511578852 is an apocalyptic number.

It is an amenable number.

11511578852 is a deficient number, since it is larger than the sum of its proper divisors (8888688028).

11511578852 is a wasteful number, since it uses less digits than its factorization.

11511578852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36429130 (or 36429128 counting only the distinct ones).

The product of its digits is 112000, while the sum is 44.

The spelling of 11511578852 in words is "eleven billion, five hundred eleven million, five hundred seventy-eight thousand, eight hundred fifty-two".