12808746893 has 2 divisors, whose sum is σ = 12808746894. Its totient is φ = 12808746892.

The previous prime is 12808746871. The next prime is 12808746931. The reversal of 12808746893 is 39864780821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12570445924 + 238300969 = 112118^2 + 15437^2 .

It is a cyclic number.

It is not a de Polignac number, because 12808746893 - 2⁶ = 12808746829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12808746803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404373446 + 6404373447.

It is an arithmetic number, because the mean of its divisors is an integer number (6404373447).

Almost surely, 2^12808746893 is an apocalyptic number.

It is an amenable number.

12808746893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808746893 is an equidigital number, since it uses as much as digits as its factorization.

12808746893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 12808746893 in words is "twelve billion, eight hundred eight million, seven hundred forty-six thousand, eight hundred ninety-three".