12405664043 has 2 divisors, whose sum is σ = 12405664044. Its totient is φ = 12405664042.

The previous prime is 12405664027. The next prime is 12405664199. The reversal of 12405664043 is 34046650421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12405664043 - 2⁴ = 12405664027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12405663994 and 12405664012.

It is not a weakly prime, because it can be changed into another prime (12405666043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6202832021 + 6202832022.

It is an arithmetic number, because the mean of its divisors is an integer number (6202832022).

Almost surely, 2^12405664043 is an apocalyptic number.

12405664043 is a deficient number, since it is larger than the sum of its proper divisors (1).

12405664043 is an equidigital number, since it uses as much as digits as its factorization.

12405664043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 35.

The spelling of 12405664043 in words is "twelve billion, four hundred five million, six hundred sixty-four thousand, forty-three".