12530020040 has 64 divisors (see below), whose sum is σ = 29704147200. Its totient is φ = 4747514112.

The previous prime is 12530020007. The next prime is 12530020043. The reversal of 12530020040 is 4002003521.

It is not an unprimeable number, because it can be changed into a prime (12530020043) 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 15 ways as a sum of consecutive naturals, for example, 28646 + ... + 160874.

It is an arithmetic number, because the mean of its divisors is an integer number (464127300).

Almost surely, 2^12530020040 is an apocalyptic number.

12530020040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12530020040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14852073600).

12530020040 is an abundant number, since it is smaller than the sum of its proper divisors (17174127160).

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

12530020040 is a wasteful number, since it uses less digits than its factorization.

12530020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132366 (or 132362 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

Adding to 12530020040 its reverse (4002003521), we get a palindrome (16532023561).

The spelling of 12530020040 in words is "twelve billion, five hundred thirty million, twenty thousand, forty".