12643313604431 has 2 divisors, whose sum is σ = 12643313604432. Its totient is φ = 12643313604430.

The previous prime is 12643313604367. The next prime is 12643313604487. The reversal of 12643313604431 is 13440631334621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12643313604431 - 2⁶ = 12643313604367 is a prime.

It is a super-2 number, since 2×12643313604431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12643313604491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321656802215 + 6321656802216.

It is an arithmetic number, because the mean of its divisors is an integer number (6321656802216).

Almost surely, 2^{12643313604431} is an apocalyptic number.

12643313604431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643313604431 is an equidigital number, since it uses as much as digits as its factorization.

12643313604431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 12643313604431 in words is "twelve trillion, six hundred forty-three billion, three hundred thirteen million, six hundred four thousand, four hundred thirty-one".