12818735971 has 2 divisors, whose sum is σ = 12818735972. Its totient is φ = 12818735970.

The previous prime is 12818735899. The next prime is 12818736011. The reversal of 12818735971 is 17953781821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12818735971 - 2¹¹ = 12818733923 is a prime.

It is not a weakly prime, because it can be changed into another prime (12818135971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6409367985 + 6409367986.

It is an arithmetic number, because the mean of its divisors is an integer number (6409367986).

Almost surely, 2^12818735971 is an apocalyptic number.

12818735971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12818735971 is an equidigital number, since it uses as much as digits as its factorization.

12818735971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 52.

The spelling of 12818735971 in words is "twelve billion, eight hundred eighteen million, seven hundred thirty-five thousand, nine hundred seventy-one".