6442443452 has 12 divisors (see below), whose sum is σ = 11278919400. Its totient is φ = 3219895056.

The previous prime is 6442443439. The next prime is 6442443457. The reversal of 6442443452 is 2543442446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442443457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320702 + ... + 340197.

It is an arithmetic number, because the mean of its divisors is an integer number (939909950).

Almost surely, 2^6442443452 is an apocalyptic number.

It is an amenable number.

6442443452 is a deficient number, since it is larger than the sum of its proper divisors (4836475948).

6442443452 is a wasteful number, since it uses less digits than its factorization.

6442443452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663340 (or 663338 counting only the distinct ones).

The product of its digits is 368640, while the sum is 38.

The square root of 6442443452 is about 80264.8332210315. The cubic root of 6442443452 is about 1860.7307657712.

Adding to 6442443452 its reverse (2543442446), we get a palindrome (8985885898).

The spelling of 6442443452 in words is "six billion, four hundred forty-two million, four hundred forty-three thousand, four hundred fifty-two".