12884481809 has 2 divisors, whose sum is σ = 12884481810. Its totient is φ = 12884481808.

The previous prime is 12884481751. The next prime is 12884481893. The reversal of 12884481809 is 90818448821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12779624209 + 104857600 = 113047^2 + 10240^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884481809 - 2¹² = 12884477713 is a prime.

It is not a weakly prime, because it can be changed into another prime (12884480809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6442240904 + 6442240905.

It is an arithmetic number, because the mean of its divisors is an integer number (6442240905).

Almost surely, 2^12884481809 is an apocalyptic number.

It is an amenable number.

12884481809 is a deficient number, since it is larger than the sum of its proper divisors (1).

12884481809 is an equidigital number, since it uses as much as digits as its factorization.

12884481809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1179648, while the sum is 53.

The spelling of 12884481809 in words is "twelve billion, eight hundred eighty-four million, four hundred eighty-one thousand, eight hundred nine".