12781943032 has 8 divisors (see below), whose sum is σ = 23966143200. Its totient is φ = 6390971512.

The previous prime is 12781942967. The next prime is 12781943063. The reversal of 12781943032 is 23034918721.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798871432 + ... + 798871447.

It is an arithmetic number, because the mean of its divisors is an integer number (2995767900).

Almost surely, 2^12781943032 is an apocalyptic number.

It is an amenable number.

12781943032 is a deficient number, since it is larger than the sum of its proper divisors (11184200168).

12781943032 is a wasteful number, since it uses less digits than its factorization.

12781943032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597742885 (or 1597742881 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 12781943032 in words is "twelve billion, seven hundred eighty-one million, nine hundred forty-three thousand, thirty-two".