12820864752 has 30 divisors (see below), whose sum is σ = 35880614952. Its totient is φ = 4273621536.

The previous prime is 12820864729. The next prime is 12820864753. The reversal of 12820864752 is 25746802821.

It is a junction number, because it is equal to n+sod(n) for n = 12820864698 and 12820864707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12820864753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44516748 + ... + 44517035.

Almost surely, 2^12820864752 is an apocalyptic number.

12820864752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12820864752 is an abundant number, since it is smaller than the sum of its proper divisors (23059750200).

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

12820864752 is a wasteful number, since it uses less digits than its factorization.

12820864752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89033797 (or 89033788 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 12820864752 in words is "twelve billion, eight hundred twenty million, eight hundred sixty-four thousand, seven hundred fifty-two".