12321053353543 has 16 divisors (see below), whose sum is σ = 13797675783936. Its totient is φ = 10905516498240.

The previous prime is 12321053353541. The next prime is 12321053353549. The reversal of 12321053353543 is 34535335012321.

It is a cyclic number.

It is not a de Polignac number, because 12321053353543 - 2¹ = 12321053353541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12321053353496 and 12321053353505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321053353541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41463355 + ... + 41759452.

It is an arithmetic number, because the mean of its divisors is an integer number (862354736496).

Almost surely, 2^{12321053353543} is an apocalyptic number.

12321053353543 is a deficient number, since it is larger than the sum of its proper divisors (1476622430393).

12321053353543 is a wasteful number, since it uses less digits than its factorization.

12321053353543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83223174.

The product of its (nonzero) digits is 486000, while the sum is 40.

Adding to 12321053353543 its reverse (34535335012321), we get a palindrome (46856388365864).

The spelling of 12321053353543 in words is "twelve trillion, three hundred twenty-one billion, fifty-three million, three hundred fifty-three thousand, five hundred forty-three".