531352704440 has 16 divisors (see below), whose sum is σ = 1195543585080. Its totient is φ = 212541081760.

The previous prime is 531352704437. The next prime is 531352704511. The reversal of 531352704440 is 44407253135.

It is a junction number, because it is equal to n+sod(n) for n = 531352704394 and 531352704403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6641908766 + ... + 6641908845.

Almost surely, 2^531352704440 is an apocalyptic number.

It is an amenable number.

531352704440 is an abundant number, since it is smaller than the sum of its proper divisors (664190880640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

531352704440 is a wasteful number, since it uses less digits than its factorization.

531352704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13283817622 (or 13283817618 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 38.

Adding to 531352704440 its reverse (44407253135), we get a palindrome (575759957575).

The spelling of 531352704440 in words is "five hundred thirty-one billion, three hundred fifty-two million, seven hundred four thousand, four hundred forty".