12816407873 has 2 divisors, whose sum is σ = 12816407874. Its totient is φ = 12816407872.

The previous prime is 12816407843. The next prime is 12816407893. The reversal of 12816407873 is 37870461821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10703350849 + 2113057024 = 103457^2 + 45968^2 .

It is a cyclic number.

It is not a de Polignac number, because 12816407873 - 2¹² = 12816403777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12816407803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408203936 + 6408203937.

It is an arithmetic number, because the mean of its divisors is an integer number (6408203937).

Almost surely, 2^12816407873 is an apocalyptic number.

It is an amenable number.

12816407873 is a deficient number, since it is larger than the sum of its proper divisors (1).

12816407873 is an equidigital number, since it uses as much as digits as its factorization.

12816407873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 12816407873 in words is "twelve billion, eight hundred sixteen million, four hundred seven thousand, eight hundred seventy-three".