531505452320 has 48 divisors (see below), whose sum is σ = 1255741921728. Its totient is φ = 212591973120.

The previous prime is 531505452281. The next prime is 531505452323. The reversal of 531505452320 is 23254505135.

It is not an unprimeable number, because it can be changed into a prime (531505452323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3873527 + ... + 4008393.

It is an arithmetic number, because the mean of its divisors is an integer number (26161290036).

Almost surely, 2^531505452320 is an apocalyptic number.

It is an amenable number.

531505452320 is an abundant number, since it is smaller than the sum of its proper divisors (724236469408).

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

531505452320 is a wasteful number, since it uses less digits than its factorization.

531505452320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159513 (or 159505 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 531505452320 its reverse (23254505135), we get a palindrome (554759957455).

The spelling of 531505452320 in words is "five hundred thirty-one billion, five hundred five million, four hundred fifty-two thousand, three hundred twenty".