12802469909 has 2 divisors, whose sum is σ = 12802469910. Its totient is φ = 12802469908.

The previous prime is 12802469893. The next prime is 12802469941. The reversal of 12802469909 is 90996420821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9609880900 + 3192589009 = 98030^2 + 56503^2 .

It is an emirp because it is prime and its reverse (90996420821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12802469909 - 2⁴ = 12802469893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12802469989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6401234954 + 6401234955.

It is an arithmetic number, because the mean of its divisors is an integer number (6401234955).

Almost surely, 2^12802469909 is an apocalyptic number.

It is an amenable number.

12802469909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12802469909 is an equidigital number, since it uses as much as digits as its factorization.

12802469909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 12802469909 in words is "twelve billion, eight hundred two million, four hundred sixty-nine thousand, nine hundred nine".