12643444571003 has 2 divisors, whose sum is σ = 12643444571004. Its totient is φ = 12643444571002.

The previous prime is 12643444570997. The next prime is 12643444571053. The reversal of 12643444571003 is 30017544434621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12643444571003 - 2²⁸ = 12643176135547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12643444571053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321722285501 + 6321722285502.

It is an arithmetic number, because the mean of its divisors is an integer number (6321722285502).

Almost surely, 2^{12643444571003} is an apocalyptic number.

12643444571003 is a deficient number, since it is larger than the sum of its proper divisors (1).

12643444571003 is an equidigital number, since it uses as much as digits as its factorization.

12643444571003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 12643444571003 in words is "twelve trillion, six hundred forty-three billion, four hundred forty-four million, five hundred seventy-one thousand, three".