12704709644646 has 128 divisors (see below), whose sum is σ = 26742501789696. Its totient is φ = 4016095395840.

The previous prime is 12704709644629. The next prime is 12704709644651. The reversal of 12704709644646 is 64644690740721.

It is a happy number.

It is a super-2 number, since 2×12704709644646² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12704709644646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10320640851 + ... + 10320642081.

It is an arithmetic number, because the mean of its divisors is an integer number (208925795232).

Almost surely, 2^{12704709644646} is an apocalyptic number.

12704709644646 is an abundant number, since it is smaller than the sum of its proper divisors (14037792145050).

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

12704709644646 is a wasteful number, since it uses less digits than its factorization.

12704709644646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646.

The product of its (nonzero) digits is 48771072, while the sum is 60.

The spelling of 12704709644646 in words is "twelve trillion, seven hundred four billion, seven hundred nine million, six hundred forty-four thousand, six hundred forty-six".