531504132330320 has 20 divisors (see below), whose sum is σ = 1235747107668180. Its totient is φ = 212601652932096.

The previous prime is 531504132330277. The next prime is 531504132330323. The reversal of 531504132330320 is 23033231405135.

It can be written as a sum of positive squares in 2 ways, for example, as 376780088358976 + 154724043971344 = 19410824^2 + 12438812^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531504132330323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3321900826985 + ... + 3321900827144.

It is an arithmetic number, because the mean of its divisors is an integer number (61787355383409).

Almost surely, 2^{531504132330320} is an apocalyptic number.

It is an amenable number.

531504132330320 is an abundant number, since it is smaller than the sum of its proper divisors (704242975337860).

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

531504132330320 is a wasteful number, since it uses less digits than its factorization.

531504132330320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6643801654142 (or 6643801654136 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 35.

Adding to 531504132330320 its reverse (23033231405135), we get a palindrome (554537363735455).

The spelling of 531504132330320 in words is "five hundred thirty-one trillion, five hundred four billion, one hundred thirty-two million, three hundred thirty thousand, three hundred twenty".