531082861528648 has 48 divisors (see below), whose sum is σ = 1178730477022140. Its totient is φ = 222831969866880.

The previous prime is 531082861528601. The next prime is 531082861528729. The reversal of 531082861528648 is 846825168280135.

It can be written as a sum of positive squares in 2 ways, for example, as 510806014636324 + 20276846892324 = 22601018^2 + 4502982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21101499715 + ... + 21101524882.

Almost surely, 2^{531082861528648} is an apocalyptic number.

It is an amenable number.

531082861528648 is an abundant number, since it is smaller than the sum of its proper divisors (647647615493492).

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

531082861528648 is a wasteful number, since it uses less digits than its factorization.

531082861528648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42203024638 (or 42203024623 counting only the distinct ones).

The product of its (nonzero) digits is 176947200, while the sum is 67.

The spelling of 531082861528648 in words is "five hundred thirty-one trillion, eighty-two billion, eight hundred sixty-one million, five hundred twenty-eight thousand, six hundred forty-eight".