12820243926 has 32 divisors (see below), whose sum is σ = 29318065920. Its totient is φ = 3661095456.

The previous prime is 12820243921. The next prime is 12820243927. The reversal of 12820243926 is 62934202821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820243921) 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, 9840 + ... + 160428.

It is an arithmetic number, because the mean of its divisors is an integer number (916189560).

Almost surely, 2^12820243926 is an apocalyptic number.

12820243926 is an abundant number, since it is smaller than the sum of its proper divisors (16497821994).

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

12820243926 is a wasteful number, since it uses less digits than its factorization.

12820243926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152628.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 12820243926 in words is "twelve billion, eight hundred twenty million, two hundred forty-three thousand, nine hundred twenty-six".