531400400044 has 6 divisors (see below), whose sum is σ = 929950700084. Its totient is φ = 265700200020.

The previous prime is 531400400039. The next prime is 531400400051. The reversal of 531400400044 is 440004004135.

It is a junction number, because it is equal to n+sod(n) for n = 531400399991 and 531400400018.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66425050002 + ... + 66425050009.

Almost surely, 2^531400400044 is an apocalyptic number.

It is an amenable number.

531400400044 is a deficient number, since it is larger than the sum of its proper divisors (398550300040).

531400400044 is a wasteful number, since it uses less digits than its factorization.

531400400044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132850100015 (or 132850100013 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 531400400044 its reverse (440004004135), we get a palindrome (971404404179).

The spelling of 531400400044 in words is "five hundred thirty-one billion, four hundred million, four hundred thousand, forty-four".