443144443322321 has 16 divisors (see below), whose sum is σ = 477466486709520. Its totient is φ = 408855844650240.

The previous prime is 443144443322299. The next prime is 443144443322351. The reversal of 443144443322321 is 123223344441344.

It can be written as a sum of positive squares in 8 ways, for example, as 25619136556225 + 417525306766096 = 5061535^2 + 20433436^2 .

It is a de Polignac number, because none of the positive numbers 2^k-443144443322321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (443144443322351) 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, 751933715 + ... + 752522823.

It is an arithmetic number, because the mean of its divisors is an integer number (29841655419345).

Almost surely, 2^{443144443322321} is an apocalyptic number.

It is an amenable number.

443144443322321 is a deficient number, since it is larger than the sum of its proper divisors (34322043387199).

443144443322321 is a wasteful number, since it uses less digits than its factorization.

443144443322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617396.

The product of its digits is 2654208, while the sum is 44.

Adding to 443144443322321 its reverse (123223344441344), we get a palindrome (566367787763665).

The spelling of 443144443322321 in words is "four hundred forty-three trillion, one hundred forty-four billion, four hundred forty-three million, three hundred twenty-two thousand, three hundred twenty-one".