12320656434773 has 2 divisors, whose sum is σ = 12320656434774. Its totient is φ = 12320656434772.

The previous prime is 12320656434739. The next prime is 12320656434829. The reversal of 12320656434773 is 37743465602321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11526344132209 + 794312302564 = 3395047^2 + 891242^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320656434773 - 2²⁶ = 12320589325909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12320656434473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160328217386 + 6160328217387.

It is an arithmetic number, because the mean of its divisors is an integer number (6160328217387).

Almost surely, 2^{12320656434773} is an apocalyptic number.

It is an amenable number.

12320656434773 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320656434773 is an equidigital number, since it uses as much as digits as its factorization.

12320656434773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 53.

The spelling of 12320656434773 in words is "twelve trillion, three hundred twenty billion, six hundred fifty-six million, four hundred thirty-four thousand, seven hundred seventy-three".