12321053353549 has 2 divisors, whose sum is σ = 12321053353550. Its totient is φ = 12321053353548.

The previous prime is 12321053353541. The next prime is 12321053353603. The reversal of 12321053353549 is 94535335012321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9118678681225 + 3202374672324 = 3019715^2 + 1789518^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321053353549 - 2³ = 12321053353541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321053353499 and 12321053353508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321053353541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160526676774 + 6160526676775.

It is an arithmetic number, because the mean of its divisors is an integer number (6160526676775).

Almost surely, 2^{12321053353549} is an apocalyptic number.

It is an amenable number.

12321053353549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321053353549 is an equidigital number, since it uses as much as digits as its factorization.

12321053353549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458000, while the sum is 46.

The spelling of 12321053353549 in words is "twelve trillion, three hundred twenty-one billion, fifty-three million, three hundred fifty-three thousand, five hundred forty-nine".