12840415404 has 12 divisors (see below), whose sum is σ = 29960969304. Its totient is φ = 4280138464.

The previous prime is 12840415351. The next prime is 12840415421. The reversal of 12840415404 is 40451404821.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535017297 + ... + 535017320.

It is an arithmetic number, because the mean of its divisors is an integer number (2496747442).

Almost surely, 2^12840415404 is an apocalyptic number.

It is an amenable number.

12840415404 is an abundant number, since it is smaller than the sum of its proper divisors (17120553900).

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

12840415404 is a wasteful number, since it uses less digits than its factorization.

12840415404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070034624 (or 1070034622 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The spelling of 12840415404 in words is "twelve billion, eight hundred forty million, four hundred fifteen thousand, four hundred four".