12451055416321 has 8 divisors (see below), whose sum is σ = 12454459641000. Its totient is φ = 12447651417600.

The previous prime is 12451055416309. The next prime is 12451055416351. The reversal of 12451055416321 is 12361455015421.

It can be written as a sum of positive squares in 4 ways, for example, as 4954608551025 + 7496446865296 = 2225895^2 + 2737964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12451055416321 - 2¹⁵ = 12451055383553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12451055416301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215011471 + ... + 215069371.

It is an arithmetic number, because the mean of its divisors is an integer number (1556807455125).

Almost surely, 2^{12451055416321} is an apocalyptic number.

It is an amenable number.

12451055416321 is a deficient number, since it is larger than the sum of its proper divisors (3404224679).

12451055416321 is an equidigital number, since it uses as much as digits as its factorization.

12451055416321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112979.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 12451055416321 in words is "twelve trillion, four hundred fifty-one billion, fifty-five million, four hundred sixteen thousand, three hundred twenty-one".