11526523871 has 4 divisors (see below), whose sum is σ = 11645354112. Its totient is φ = 11407693632.

The previous prime is 11526523847. The next prime is 11526523873. The reversal of 11526523871 is 17832562511.

It is a happy number.

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 11526523871 - 2¹⁸ = 11526261727 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 (11526523873) 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, 59414975 + ... + 59415168.

It is an arithmetic number, because the mean of its divisors is an integer number (2911338528).

Almost surely, 2^11526523871 is an apocalyptic number.

11526523871 is a deficient number, since it is larger than the sum of its proper divisors (118830241).

11526523871 is an equidigital number, since it uses as much as digits as its factorization.

11526523871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118830240.

The product of its digits is 100800, while the sum is 41.

The spelling of 11526523871 in words is "eleven billion, five hundred twenty-six million, five hundred twenty-three thousand, eight hundred seventy-one".