12804931673 has 2 divisors, whose sum is σ = 12804931674. Its totient is φ = 12804931672.

The previous prime is 12804931651. The next prime is 12804931681. The reversal of 12804931673 is 37613940821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8098560064 + 4706371609 = 89992^2 + 68603^2 .

It is an emirp because it is prime and its reverse (37613940821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12804931673 - 2⁶ = 12804931609 is a prime.

It is not a weakly prime, because it can be changed into another prime (12804931613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402465836 + 6402465837.

It is an arithmetic number, because the mean of its divisors is an integer number (6402465837).

Almost surely, 2^12804931673 is an apocalyptic number.

It is an amenable number.

12804931673 is a deficient number, since it is larger than the sum of its proper divisors (1).

12804931673 is an equidigital number, since it uses as much as digits as its factorization.

12804931673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 12804931673 in words is "twelve billion, eight hundred four million, nine hundred thirty-one thousand, six hundred seventy-three".