12637568812506 has 32 divisors (see below), whose sum is σ = 28523666289600. Its totient is φ = 3697512295680.

The previous prime is 12637568812471. The next prime is 12637568812507. The reversal of 12637568812506 is 60521886573621.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12637568812506.

It is not an unprimeable number, because it can be changed into a prime (12637568812507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3301348351 + ... + 3301352178.

It is an arithmetic number, because the mean of its divisors is an integer number (891364571550).

Almost surely, 2^{12637568812506} is an apocalyptic number.

12637568812506 is an abundant number, since it is smaller than the sum of its proper divisors (15886097477094).

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

12637568812506 is a wasteful number, since it uses less digits than its factorization.

12637568812506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602700574.

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 12637568812506 in words is "twelve trillion, six hundred thirty-seven billion, five hundred sixty-eight million, eight hundred twelve thousand, five hundred six".