12928480521240 has 64 divisors (see below), whose sum is σ = 38786271631200. Its totient is φ = 3447521021952.

The previous prime is 12928480521239. The next prime is 12928480521277. The reversal of 12928480521240 is 4212508482921.

It is a super-2 number, since 2×12928480521240² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12928480521240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4596546 + ... + 6854574.

Almost surely, 2^{12928480521240} is an apocalyptic number.

12928480521240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12928480521240 is an abundant number, since it is smaller than the sum of its proper divisors (25857791109960).

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

12928480521240 is a wasteful number, since it uses less digits than its factorization.

12928480521240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305756 (or 2305752 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 12928480521240 in words is "twelve trillion, nine hundred twenty-eight billion, four hundred eighty million, five hundred twenty-one thousand, two hundred forty".