11528569238 has 32 divisors (see below), whose sum is σ = 18474467040. Its totient is φ = 5379644160.

The previous prime is 11528569237. The next prime is 11528569277. The reversal of 11528569238 is 83296582511.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11528569237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2941256 + ... + 2945172.

It is an arithmetic number, because the mean of its divisors is an integer number (577327095).

Almost surely, 2^11528569238 is an apocalyptic number.

11528569238 is a deficient number, since it is larger than the sum of its proper divisors (6945897802).

11528569238 is a wasteful number, since it uses less digits than its factorization.

11528569238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5072.

The product of its digits is 1036800, while the sum is 50.

The spelling of 11528569238 in words is "eleven billion, five hundred twenty-eight million, five hundred sixty-nine thousand, two hundred thirty-eight".