12506564420526 has 16 divisors (see below), whose sum is σ = 27287049644928. Its totient is φ = 3789868006200.

The previous prime is 12506564420489. The next prime is 12506564420573. The reversal of 12506564420526 is 62502446560521.

It is a congruent 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, 94746700090 + ... + 94746700221.

It is an arithmetic number, because the mean of its divisors is an integer number (1705440602808).

Almost surely, 2^{12506564420526} is an apocalyptic number.

12506564420526 is an abundant number, since it is smaller than the sum of its proper divisors (14780485224402).

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

12506564420526 is a wasteful number, since it uses less digits than its factorization.

12506564420526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189493400327.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 12506564420526 in words is "twelve trillion, five hundred six billion, five hundred sixty-four million, four hundred twenty thousand, five hundred twenty-six".