12620564362864 has 20 divisors (see below), whose sum is σ = 25890716597904. Its totient is φ = 5939089111808.

The previous prime is 12620564362823. The next prime is 12620564362867. The reversal of 12620564362864 is 46826346502621.

12620564362864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620564362867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23199566572 + ... + 23199567115.

Almost surely, 2^{12620564362864} is an apocalyptic number.

It is an amenable number.

12620564362864 is an abundant number, since it is smaller than the sum of its proper divisors (13270152235040).

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

12620564362864 is a wasteful number, since it uses less digits than its factorization.

12620564362864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46399133712 (or 46399133706 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 55.

The spelling of 12620564362864 in words is "twelve trillion, six hundred twenty billion, five hundred sixty-four million, three hundred sixty-two thousand, eight hundred sixty-four".