12406459643 has 4 divisors (see below), whose sum is σ = 12616738680. Its totient is φ = 12196180608.

The previous prime is 12406459633. The next prime is 12406459649. The reversal of 12406459643 is 34695460421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12406459643 - 2¹² = 12406455547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12406459594 and 12406459603.

It is not an unprimeable number, because it can be changed into a prime (12406459649) 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, 105139430 + ... + 105139547.

It is an arithmetic number, because the mean of its divisors is an integer number (3154184670).

Almost surely, 2^12406459643 is an apocalyptic number.

12406459643 is a deficient number, since it is larger than the sum of its proper divisors (210279037).

12406459643 is an equidigital number, since it uses as much as digits as its factorization.

12406459643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210279036.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 12406459643 in words is "twelve billion, four hundred six million, four hundred fifty-nine thousand, six hundred forty-three".