12320656434497 has 2 divisors, whose sum is σ = 12320656434498. Its totient is φ = 12320656434496.

The previous prime is 12320656434473. The next prime is 12320656434511. The reversal of 12320656434497 is 79443465602321.

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., 11157744383041 + 1162912051456 = 3340321^2 + 1078384^2 .

It is an emirp because it is prime and its reverse (79443465602321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12320656434497 - 2¹⁸ = 12320656172353 is a prime.

It is not a weakly prime, because it can be changed into another prime (12320656434997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160328217248 + 6160328217249.

It is an arithmetic number, because the mean of its divisors is an integer number (6160328217249).

Almost surely, 2^{12320656434497} is an apocalyptic number.

It is an amenable number.

12320656434497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320656434497 is an equidigital number, since it uses as much as digits as its factorization.

12320656434497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26127360, while the sum is 56.

The spelling of 12320656434497 in words is "twelve trillion, three hundred twenty billion, six hundred fifty-six million, four hundred thirty-four thousand, four hundred ninety-seven".