531013535660 has 48 divisors (see below), whose sum is σ = 1156386294336. Its totient is φ = 204658244352.

The previous prime is 531013535641. The next prime is 531013535687. The reversal of 531013535660 is 66535310135.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3407207 + ... + 3559646.

It is an arithmetic number, because the mean of its divisors is an integer number (24091381132).

Almost surely, 2^531013535660 is an apocalyptic number.

It is an amenable number.

531013535660 is an abundant number, since it is smaller than the sum of its proper divisors (625372758676).

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

531013535660 is a wasteful number, since it uses less digits than its factorization.

531013535660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967002 (or 6967000 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 38.

Adding to 531013535660 its reverse (66535310135), we get a palindrome (597548845795).

The spelling of 531013535660 in words is "five hundred thirty-one billion, thirteen million, five hundred thirty-five thousand, six hundred sixty".