4221443052544 has 44 divisors (see below), whose sum is σ = 8487542938644. Its totient is φ = 2098520735744.

The previous prime is 4221443052539. The next prime is 4221443052551. The reversal of 4221443052544 is 4452503441224.

It can be written as a sum of positive squares in 2 ways, for example, as 3717184000000 + 504259052544 = 1928000^2 + 710112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4221443052497 and 4221443052506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11737597 + ... + 12091900.

It is an arithmetic number, because the mean of its divisors is an integer number (192898703151).

Almost surely, 2^{4221443052544} is an apocalyptic number.

It is an amenable number.

4221443052544 is an abundant number, since it is smaller than the sum of its proper divisors (4266099886100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221443052544 is a wasteful number, since it uses less digits than its factorization.

4221443052544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23829690 (or 23829672 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 4221443052544 its reverse (4452503441224), we get a palindrome (8673946493768).

The spelling of 4221443052544 in words is "four trillion, two hundred twenty-one billion, four hundred forty-three million, fifty-two thousand, five hundred forty-four".