531390245832 has 256 divisors, whose sum is σ = 1538792064000. Its totient is φ = 169759908864.

The previous prime is 531390245831. The next prime is 531390245873. The reversal of 531390245832 is 238542093135.

531390245832 is a `hidden beast` number, since 5 + 31 + 39 + 0 + 2 + 4 + 583 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (531390245831) 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 63 ways as a sum of consecutive naturals, for example, 387027898 + ... + 387029270.

It is an arithmetic number, because the mean of its divisors is an integer number (6010906500).

Almost surely, 2^531390245832 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 531390245832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769396032000).

531390245832 is an abundant number, since it is smaller than the sum of its proper divisors (1007401818168).

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

531390245832 is a wasteful number, since it uses less digits than its factorization.

531390245832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 531390245832 in words is "five hundred thirty-one billion, three hundred ninety million, two hundred forty-five thousand, eight hundred thirty-two".