12812447040 has 56 divisors (see below), whose sum is σ = 40679522400. Its totient is φ = 3416652288.

The previous prime is 12812447017. The next prime is 12812447041. The reversal of 12812447040 is 4074421821.

It is a junction number, because it is equal to n+sod(n) for n = 12812446992 and 12812447010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12812447041) 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 7 ways as a sum of consecutive naturals, for example, 6672190 + ... + 6674109.

Almost surely, 2^12812447040 is an apocalyptic number.

12812447040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12812447040 is an abundant number, since it is smaller than the sum of its proper divisors (27867075360).

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

12812447040 is a wasteful number, since it uses less digits than its factorization.

12812447040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13346319 (or 13346309 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

Adding to 12812447040 its reverse (4074421821), we get a palindrome (16886868861).

The spelling of 12812447040 in words is "twelve billion, eight hundred twelve million, four hundred forty-seven thousand, forty".