13444324436 has 12 divisors (see below), whose sum is σ = 23539177620. Its totient is φ = 6718845120.

The previous prime is 13444324417. The next prime is 13444324441. The reversal of 13444324436 is 63442344431.

It can be written as a sum of positive squares in 2 ways, for example, as 9964032400 + 3480292036 = 99820^2 + 58994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13444324436.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820145 + ... + 836376.

It is an arithmetic number, because the mean of its divisors is an integer number (1961598135).

Almost surely, 2^13444324436 is an apocalyptic number.

It is an amenable number.

13444324436 is a deficient number, since it is larger than the sum of its proper divisors (10094853184).

13444324436 is a wasteful number, since it uses less digits than its factorization.

13444324436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658554 (or 1658552 counting only the distinct ones).

The product of its digits is 331776, while the sum is 38.

Adding to 13444324436 its reverse (63442344431), we get a palindrome (76886668867).

The spelling of 13444324436 in words is "thirteen billion, four hundred forty-four million, three hundred twenty-four thousand, four hundred thirty-six".