13444420361 has 2 divisors, whose sum is σ = 13444420362. Its totient is φ = 13444420360.

The previous prime is 13444420357. The next prime is 13444420393. The reversal of 13444420361 is 16302444431.

It is an a-pointer prime, because the next prime (13444420393) can be obtained adding 13444420361 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12846862336 + 597558025 = 113344^2 + 24445^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444420361 - 2² = 13444420357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13444420321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722210180 + 6722210181.

It is an arithmetic number, because the mean of its divisors is an integer number (6722210181).

Almost surely, 2^13444420361 is an apocalyptic number.

It is an amenable number.

13444420361 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444420361 is an equidigital number, since it uses as much as digits as its factorization.

13444420361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 13444420361 its reverse (16302444431), we get a palindrome (29746864792).

The spelling of 13444420361 in words is "thirteen billion, four hundred forty-four million, four hundred twenty thousand, three hundred sixty-one".