12523606557 has 64 divisors (see below), whose sum is σ = 21073029120. Its totient is φ = 6426604800.

The previous prime is 12523606523. The next prime is 12523606573. The reversal of 12523606557 is 75560632521.

It is not a de Polignac number, because 12523606557 - 2¹⁵ = 12523573789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523606577) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12362383 + ... + 12363395.

It is an arithmetic number, because the mean of its divisors is an integer number (329266080).

Almost surely, 2^12523606557 is an apocalyptic number.

It is an amenable number.

12523606557 is a deficient number, since it is larger than the sum of its proper divisors (8549422563).

12523606557 is a wasteful number, since it uses less digits than its factorization.

12523606557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 12523606557 in words is "twelve billion, five hundred twenty-three million, six hundred six thousand, five hundred fifty-seven".