4006204572644 has 12 divisors (see below), whose sum is σ = 7014313343100. Its totient is φ = 2002115046048.

The previous prime is 4006204572607. The next prime is 4006204572647. The reversal of 4006204572644 is 4462754026004.

It can be written as a sum of positive squares in 2 ways, for example, as 3444409351744 + 561795220900 = 1855912^2 + 749530^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4006204572595 and 4006204572604.

It is not an unprimeable number, because it can be changed into a prime (4006204572647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 246800939 + ... + 246817170.

It is an arithmetic number, because the mean of its divisors is an integer number (584526111925).

Almost surely, 2^{4006204572644} is an apocalyptic number.

It is an amenable number.

4006204572644 is a deficient number, since it is larger than the sum of its proper divisors (3008108770456).

4006204572644 is a wasteful number, since it uses less digits than its factorization.

4006204572644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493620142 (or 493620140 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 44.

Adding to 4006204572644 its reverse (4462754026004), we get a palindrome (8468958598648).

The spelling of 4006204572644 in words is "four trillion, six billion, two hundred four million, five hundred seventy-two thousand, six hundred forty-four".