12816399999941 has 2 divisors, whose sum is σ = 12816399999942. Its totient is φ = 12816399999940.

The previous prime is 12816399999911. The next prime is 12816400000031. The reversal of 12816399999941 is 14999999361821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12569003187841 + 247396812100 = 3545279^2 + 497390^2 .

It is a cyclic number.

It is not a de Polignac number, because 12816399999941 - 2¹⁸ = 12816399737797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12816399999911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6408199999970 + 6408199999971.

It is an arithmetic number, because the mean of its divisors is an integer number (6408199999971).

Almost surely, 2^{12816399999941} is an apocalyptic number.

It is an amenable number.

12816399999941 is a deficient number, since it is larger than the sum of its proper divisors (1).

12816399999941 is an equidigital number, since it uses as much as digits as its factorization.

12816399999941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 612220032, while the sum is 80.

The spelling of 12816399999941 in words is "twelve trillion, eight hundred sixteen billion, three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-one".