12812947520 has 112 divisors (see below), whose sum is σ = 31209008448. Its totient is φ = 5008988160.

The previous prime is 12812947457. The next prime is 12812947601. The reversal of 12812947520 is 2574921821.

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, 3179747 + ... + 3183773.

Almost surely, 2^12812947520 is an apocalyptic number.

12812947520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12812947520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15604504224).

12812947520 is an abundant number, since it is smaller than the sum of its proper divisors (18396060928).

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

12812947520 is a wasteful number, since it uses less digits than its factorization.

12812947520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268 (or 4258 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 12812947520 in words is "twelve billion, eight hundred twelve million, nine hundred forty-seven thousand, five hundred twenty".