12065600656321 has 2 divisors, whose sum is σ = 12065600656322. Its totient is φ = 12065600656320.

The previous prime is 12065600656313. The next prime is 12065600656349. The reversal of 12065600656321 is 12365600656021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9983166948225 + 2082433708096 = 3159615^2 + 1443064^2 .

It is a cyclic number.

It is not a de Polignac number, because 12065600656321 - 2³ = 12065600656313 is a prime.

It is not a weakly prime, because it can be changed into another prime (12065600656621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6032800328160 + 6032800328161.

It is an arithmetic number, because the mean of its divisors is an integer number (6032800328161).

Almost surely, 2^{12065600656321} is an apocalyptic number.

It is an amenable number.

12065600656321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12065600656321 is an equidigital number, since it uses as much as digits as its factorization.

12065600656321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 12065600656321 in words is "twelve trillion, sixty-five billion, six hundred million, six hundred fifty-six thousand, three hundred twenty-one".