443120021345 has 16 divisors (see below), whose sum is σ = 540858753360. Its totient is φ = 348428083200.

The previous prime is 443120021339. The next prime is 443120021363. The reversal of 443120021345 is 543120021344.

It can be written as a sum of positive squares in 8 ways, for example, as 14189336161 + 428930685184 = 119119^2 + 654928^2 .

It is not a de Polignac number, because 443120021345 - 2⁴ = 443120021329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118640 + ... + 948849.

It is an arithmetic number, because the mean of its divisors is an integer number (33803672085).

Almost surely, 2^443120021345 is an apocalyptic number.

It is an amenable number.

443120021345 is a deficient number, since it is larger than the sum of its proper divisors (97738732015).

443120021345 is a wasteful number, since it uses less digits than its factorization.

443120021345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068916.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 443120021345 its reverse (543120021344), we get a palindrome (986240042689).

Subtracting 443120021345 from its reverse (543120021344), we obtain a palindrome (99999999999).

The spelling of 443120021345 in words is "four hundred forty-three billion, one hundred twenty million, twenty-one thousand, three hundred forty-five".