12784811612 has 24 divisors (see below), whose sum is σ = 22543378704. Its totient is φ = 6344026112.

The previous prime is 12784811591. The next prime is 12784811621. The reversal of 12784811612 is 21611848721.

It is a self number, because there is not a number n which added to its sum of digits gives 12784811612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265628 + ... + 310044.

It is an arithmetic number, because the mean of its divisors is an integer number (939307446).

Almost surely, 2^12784811612 is an apocalyptic number.

It is an amenable number.

12784811612 is a deficient number, since it is larger than the sum of its proper divisors (9758567092).

12784811612 is a wasteful number, since it uses less digits than its factorization.

12784811612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44965 (or 44963 counting only the distinct ones).

The product of its digits is 43008, while the sum is 41.

The spelling of 12784811612 in words is "twelve billion, seven hundred eighty-four million, eight hundred eleven thousand, six hundred twelve".