531690748680 has 128 divisors (see below), whose sum is σ = 1963165881600. Its totient is φ = 112180902912.

The previous prime is 531690748661. The next prime is 531690748697. The reversal of 531690748680 is 86847096135.

It is a self number, because there is not a number n which added to its sum of digits gives 531690748680.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 24333895 + ... + 24355734.

It is an arithmetic number, because the mean of its divisors is an integer number (15337233450).

Almost surely, 2^531690748680 is an apocalyptic number.

It is an amenable number.

531690748680 is an abundant number, since it is smaller than the sum of its proper divisors (1431475132920).

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

531690748680 is a wasteful number, since it uses less digits than its factorization.

531690748680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48689663 (or 48689659 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 531690748680 in words is "five hundred thirty-one billion, six hundred ninety million, seven hundred forty-eight thousand, six hundred eighty".