531204730645680 has 2880 divisors, whose sum is σ = 2376703193260032. Its totient is φ = 105161160867840.

The previous prime is 531204730645639. The next prime is 531204730645681. The reversal of 531204730645680 is 86546037402135.

531204730645680 is a `hidden beast` number, since 5 + 3 + 1 + 2 + 0 + 4 + 73 + 0 + 6 + 4 + 568 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (531204730645681) by changing a digit.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 297927498069 + ... + 297927499851.

Almost surely, 2^{531204730645680} 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 531204730645680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188351596630016).

531204730645680 is an abundant number, since it is smaller than the sum of its proper divisors (1845498462614352).

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

531204730645680 is a wasteful number, since it uses less digits than its factorization.

531204730645680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376 (or 2360 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 54.

The spelling of 531204730645680 in words is "five hundred thirty-one trillion, two hundred four billion, seven hundred thirty million, six hundred forty-five thousand, six hundred eighty".