12646522136506 has 16 divisors (see below), whose sum is σ = 18979196822784. Its totient is φ = 6320123971344.

The previous prime is 12646522136483. The next prime is 12646522136543. The reversal of 12646522136506 is 60563122564621.

It is a self number, because there is not a number n which added to its sum of digits gives 12646522136506.

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, 33120031 + ... + 33499693.

It is an arithmetic number, because the mean of its divisors is an integer number (1186199801424).

Almost surely, 2^{12646522136506} is an apocalyptic number.

12646522136506 is a deficient number, since it is larger than the sum of its proper divisors (6332674686278).

12646522136506 is a wasteful number, since it uses less digits than its factorization.

12646522136506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387885.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 12646522136506 in words is "twelve trillion, six hundred forty-six billion, five hundred twenty-two million, one hundred thirty-six thousand, five hundred six".