12520808480440 has 32 divisors (see below), whose sum is σ = 30338882088480. Its totient is φ = 4623067746432.

The previous prime is 12520808480387. The next prime is 12520808480471. The reversal of 12520808480440 is 4408480802521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12039238404 + ... + 12039239443.

It is an arithmetic number, because the mean of its divisors is an integer number (948090065265).

Almost surely, 2^{12520808480440} is an apocalyptic number.

12520808480440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12520808480440 is an abundant number, since it is smaller than the sum of its proper divisors (17818073608040).

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

12520808480440 is a wasteful number, since it uses less digits than its factorization.

12520808480440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24078477871 (or 24078477867 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 46.

The spelling of 12520808480440 in words is "twelve trillion, five hundred twenty billion, eight hundred eight million, four hundred eighty thousand, four hundred forty".