12904821356 has 24 divisors (see below), whose sum is σ = 27168046080. Its totient is φ = 5239551312.

The previous prime is 12904821341. The next prime is 12904821361. The reversal of 12904821356 is 65312840921.

12904821356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12128060 + ... + 12129123.

It is an arithmetic number, because the mean of its divisors is an integer number (1132001920).

Almost surely, 2^12904821356 is an apocalyptic number.

It is an amenable number.

12904821356 is an abundant number, since it is smaller than the sum of its proper divisors (14263224724).

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

12904821356 is a wasteful number, since it uses less digits than its factorization.

12904821356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24257213 (or 24257211 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 12904821356 in words is "twelve billion, nine hundred four million, eight hundred twenty-one thousand, three hundred fifty-six".