531987605108 has 24 divisors (see below), whose sum is σ = 931914213384. Its totient is φ = 265726540800.

The previous prime is 531987605063. The next prime is 531987605113. The reversal of 531987605108 is 801506789135.

It can be written as a sum of positive squares in 4 ways, for example, as 131296073104 + 400691532004 = 362348^2 + 633002^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 531987605108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17335298 + ... + 17365958.

It is an arithmetic number, because the mean of its divisors is an integer number (38829758891).

Almost surely, 2^531987605108 is an apocalyptic number.

It is an amenable number.

531987605108 is a deficient number, since it is larger than the sum of its proper divisors (399926608276).

531987605108 is a wasteful number, since it uses less digits than its factorization.

531987605108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34883 (or 34881 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 531987605108 in words is "five hundred thirty-one billion, nine hundred eighty-seven million, six hundred five thousand, one hundred eight".