11528242591 has 2 divisors, whose sum is σ = 11528242592. Its totient is φ = 11528242590.

The previous prime is 11528242573. The next prime is 11528242601. The reversal of 11528242591 is 19524282511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11528242591 - 2⁷ = 11528242463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11528242291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5764121295 + 5764121296.

It is an arithmetic number, because the mean of its divisors is an integer number (5764121296).

Almost surely, 2^11528242591 is an apocalyptic number.

11528242591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11528242591 is an equidigital number, since it uses as much as digits as its factorization.

11528242591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 40.

The spelling of 11528242591 in words is "eleven billion, five hundred twenty-eight million, two hundred forty-two thousand, five hundred ninety-one".