13466442321 has 8 divisors (see below), whose sum is σ = 19950284960. Its totient is φ = 8977628196.

The previous prime is 13466442317. The next prime is 13466442323. The reversal of 13466442321 is 12324466431.

13466442321 is a `hidden beast` number, since 1 + 3 + 4 + 6 + 644 + 2 + 3 + 2 + 1 = 666.

It is not a de Polignac number, because 13466442321 - 2² = 13466442317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13466442323) 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, 249378535 + ... + 249378588.

It is an arithmetic number, because the mean of its divisors is an integer number (2493785620).

Almost surely, 2^13466442321 is an apocalyptic number.

It is an amenable number.

13466442321 is a deficient number, since it is larger than the sum of its proper divisors (6483842639).

13466442321 is an equidigital number, since it uses as much as digits as its factorization.

13466442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498757132 (or 498757126 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The spelling of 13466442321 in words is "thirteen billion, four hundred sixty-six million, four hundred forty-two thousand, three hundred twenty-one".