12371536813 has 2 divisors, whose sum is σ = 12371536814. Its totient is φ = 12371536812.

The previous prime is 12371536799. The next prime is 12371536831. The reversal of 12371536813 is 31863517321.

It is a happy number.

Together with next prime (12371536831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12293709129 + 77827684 = 110877^2 + 8822^2 .

It is a cyclic number.

It is not a de Polignac number, because 12371536813 - 2⁹ = 12371536301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12371536013) 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, 6185768406 + 6185768407.

It is an arithmetic number, because the mean of its divisors is an integer number (6185768407).

Almost surely, 2^12371536813 is an apocalyptic number.

It is an amenable number.

12371536813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12371536813 is an equidigital number, since it uses as much as digits as its factorization.

12371536813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 40.

The spelling of 12371536813 in words is "twelve billion, three hundred seventy-one million, five hundred thirty-six thousand, eight hundred thirteen".