12808832989 has 2 divisors, whose sum is σ = 12808832990. Its totient is φ = 12808832988.

The previous prime is 12808832983. The next prime is 12808833007. The reversal of 12808832989 is 98923880821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12787764889 + 21068100 = 113083^2 + 4590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12808832989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12808832983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6404416494 + 6404416495.

It is an arithmetic number, because the mean of its divisors is an integer number (6404416495).

Almost surely, 2^12808832989 is an apocalyptic number.

It is an amenable number.

12808832989 is a deficient number, since it is larger than the sum of its proper divisors (1).

12808832989 is an equidigital number, since it uses as much as digits as its factorization.

12808832989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The spelling of 12808832989 in words is "twelve billion, eight hundred eight million, eight hundred thirty-two thousand, nine hundred eighty-nine".