12943886913646 has 32 divisors (see below), whose sum is σ = 21150110227680. Its totient is φ = 5905351609344.

The previous prime is 12943886913641. The next prime is 12943886913679. The reversal of 12943886913646 is 64631968834921.

12943886913646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12943886913646² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12943886913641) 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, 7662166 + ... + 9197638.

It is an arithmetic number, because the mean of its divisors is an integer number (660940944615).

Almost surely, 2^{12943886913646} is an apocalyptic number.

12943886913646 is a deficient number, since it is larger than the sum of its proper divisors (8206223314034).

12943886913646 is a wasteful number, since it uses less digits than its factorization.

12943886913646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539220.

The product of its digits is 322486272, while the sum is 70.

The spelling of 12943886913646 in words is "twelve trillion, nine hundred forty-three billion, eight hundred eighty-six million, nine hundred thirteen thousand, six hundred forty-six".