12537526506 has 16 divisors (see below), whose sum is σ = 25296957504. Its totient is φ = 4142191424.

The previous prime is 12537526483. The next prime is 12537526513. The reversal of 12537526506 is 60562573521.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9245286 + ... + 9246641.

It is an arithmetic number, because the mean of its divisors is an integer number (1581059844).

Almost surely, 2^12537526506 is an apocalyptic number.

12537526506 is an abundant number, since it is smaller than the sum of its proper divisors (12759430998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12537526506 is a wasteful number, since it uses less digits than its factorization.

12537526506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18492045.

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

The spelling of 12537526506 in words is "twelve billion, five hundred thirty-seven million, five hundred twenty-six thousand, five hundred six".