531521875464 has 128 divisors (see below), whose sum is σ = 1367626444800. Its totient is φ = 172047939840.

The previous prime is 531521875447. The next prime is 531521875471. The reversal of 531521875464 is 464578125135.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297104682 + ... + 297106470.

It is an arithmetic number, because the mean of its divisors is an integer number (10684581600).

Almost surely, 2^531521875464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531521875464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683813222400).

531521875464 is an abundant number, since it is smaller than the sum of its proper divisors (836104569336).

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

531521875464 is a wasteful number, since it uses less digits than its factorization.

531521875464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3355 (or 3351 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 51.

The spelling of 531521875464 in words is "five hundred thirty-one billion, five hundred twenty-one million, eight hundred seventy-five thousand, four hundred sixty-four".