4405431602644 has 24 divisors (see below), whose sum is σ = 7897769161128. Its totient is φ = 2148929218560.

The previous prime is 4405431602623. The next prime is 4405431602651. The reversal of 4405431602644 is 4462061345044.

It can be written as a sum of positive squares in 4 ways, for example, as 27419385744 + 4378012216900 = 165588^2 + 2092370^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4405431602644.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5616804 + ... + 6352900.

It is an arithmetic number, because the mean of its divisors is an integer number (329073715047).

Almost surely, 2^{4405431602644} is an apocalyptic number.

It is an amenable number.

4405431602644 is a deficient number, since it is larger than the sum of its proper divisors (3492337558484).

4405431602644 is a wasteful number, since it uses less digits than its factorization.

4405431602644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772635 (or 772633 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 43.

Adding to 4405431602644 its reverse (4462061345044), we get a palindrome (8867492947688).

The spelling of 4405431602644 in words is "four trillion, four hundred five billion, four hundred thirty-one million, six hundred two thousand, six hundred forty-four".