12530320324 has 24 divisors (see below), whose sum is σ = 22271419800. Its totient is φ = 6167673600.

The previous prime is 12530320321. The next prime is 12530320333. The reversal of 12530320324 is 42302303521.

It can be written as a sum of positive squares in 4 ways, for example, as 5073997824 + 7456322500 = 71232^2 + 86350^2 .

It is not an unprimeable number, because it can be changed into a prime (12530320321) 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, 4674 + ... + 158374.

It is an arithmetic number, because the mean of its divisors is an integer number (927975825).

Almost surely, 2^12530320324 is an apocalyptic number.

It is an amenable number.

12530320324 is a deficient number, since it is larger than the sum of its proper divisors (9741099476).

12530320324 is a wasteful number, since it uses less digits than its factorization.

12530320324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154023 (or 154021 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 12530320324 its reverse (42302303521), we get a palindrome (54832623845).

The spelling of 12530320324 in words is "twelve billion, five hundred thirty million, three hundred twenty thousand, three hundred twenty-four".