12784658412 has 48 divisors (see below), whose sum is σ = 30116443392. Its totient is φ = 4220923200.

The previous prime is 12784658389. The next prime is 12784658413. The reversal of 12784658412 is 21485648721.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12784658413) 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, 618598 + ... + 638930.

It is an arithmetic number, because the mean of its divisors is an integer number (627425904).

Almost surely, 2^12784658412 is an apocalyptic number.

12784658412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12784658412 is an abundant number, since it is smaller than the sum of its proper divisors (17331784980).

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

12784658412 is a wasteful number, since it uses less digits than its factorization.

12784658412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20838 (or 20836 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The spelling of 12784658412 in words is "twelve billion, seven hundred eighty-four million, six hundred fifty-eight thousand, four hundred twelve".