12784419072 has 54 divisors (see below), whose sum is σ = 36860638542. Its totient is φ = 4261472256.

The previous prime is 12784419049. The next prime is 12784419091. The reversal of 12784419072 is 27091448721.

It can be written as a sum of positive squares in only one way, i.e., 6564888576 + 6219530496 = 81024^2 + 78864^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2772093 + ... + 2776700.

Almost surely, 2^12784419072 is an apocalyptic number.

12784419072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12784419072 is an abundant number, since it is smaller than the sum of its proper divisors (24076219470).

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

12784419072 is an equidigital number, since it uses as much as digits as its factorization.

12784419072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548815 (or 5548798 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 12784419072 in words is "twelve billion, seven hundred eighty-four million, four hundred nineteen thousand, seventy-two".