531560221712 has 40 divisors (see below), whose sum is σ = 1174363257816. Its totient is φ = 230903986176.

The previous prime is 531560221711. The next prime is 531560221769. The reversal of 531560221712 is 217122065135.

It can be written as a sum of positive squares in 4 ways, for example, as 68719476736 + 462840744976 = 262144^2 + 680324^2 .

It is not an unprimeable number, because it can be changed into a prime (531560221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75160523 + ... + 75167594.

Almost surely, 2^531560221712 is an apocalyptic number.

531560221712 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

531560221712 is an abundant number, since it is smaller than the sum of its proper divisors (642803036104).

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

531560221712 is a wasteful number, since it uses less digits than its factorization.

531560221712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150328155 (or 150328149 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 531560221712 its reverse (217122065135), we get a palindrome (748682286847).

The spelling of 531560221712 in words is "five hundred thirty-one billion, five hundred sixty million, two hundred twenty-one thousand, seven hundred twelve".