13444446888913 has 2 divisors, whose sum is σ = 13444446888914. Its totient is φ = 13444446888912.

The previous prime is 13444446888877. The next prime is 13444446888919. The reversal of 13444446888913 is 31988864444431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10772882790849 + 2671564098064 = 3282207^2 + 1634492^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444446888913 - 2²⁵ = 13444413334481 is a prime.

It is not a weakly prime, because it can be changed into another prime (13444446888919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722223444456 + 6722223444457.

It is an arithmetic number, because the mean of its divisors is an integer number (6722223444457).

Almost surely, 2^{13444446888913} is an apocalyptic number.

It is an amenable number.

13444446888913 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444446888913 is an equidigital number, since it uses as much as digits as its factorization.

13444446888913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254803968, while the sum is 67.

The spelling of 13444446888913 in words is "thirteen trillion, four hundred forty-four billion, four hundred forty-six million, eight hundred eighty-eight thousand, nine hundred thirteen".