12385686673 has 2 divisors, whose sum is σ = 12385686674. Its totient is φ = 12385686672.

The previous prime is 12385686637. The next prime is 12385686689. The reversal of 12385686673 is 37668658321.

Together with previous prime (12385686637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12278191249 + 107495424 = 110807^2 + 10368^2 .

It is a cyclic number.

It is not a de Polignac number, because 12385686673 - 2²¹ = 12383589521 is a prime.

It is not a weakly prime, because it can be changed into another prime (12385686613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6192843336 + 6192843337.

It is an arithmetic number, because the mean of its divisors is an integer number (6192843337).

Almost surely, 2^12385686673 is an apocalyptic number.

It is an amenable number.

12385686673 is a deficient number, since it is larger than the sum of its proper divisors (1).

12385686673 is an equidigital number, since it uses as much as digits as its factorization.

12385686673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 55.

The spelling of 12385686673 in words is "twelve billion, three hundred eighty-five million, six hundred eighty-six thousand, six hundred seventy-three".