531863248566 has 48 divisors (see below), whose sum is σ = 1189002240000. Its totient is φ = 158371181280.

The previous prime is 531863248561. The next prime is 531863248571. The reversal of 531863248566 is 665842368135.

It is an interprime number because it is at equal distance from previous prime (531863248561) and next prime (531863248571).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531863248561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8428566 + ... + 8491433.

It is an arithmetic number, because the mean of its divisors is an integer number (24770880000).

Almost surely, 2^531863248566 is an apocalyptic number.

531863248566 is an abundant number, since it is smaller than the sum of its proper divisors (657138991434).

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

531863248566 is a wasteful number, since it uses less digits than its factorization.

531863248566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16920061 (or 16920048 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 57.

The spelling of 531863248566 in words is "five hundred thirty-one billion, eight hundred sixty-three million, two hundred forty-eight thousand, five hundred sixty-six".