12781730682 has 48 divisors (see below), whose sum is σ = 31656423552. Its totient is φ = 3651181920.

The previous prime is 12781730671. The next prime is 12781730713. The reversal of 12781730682 is 28603718721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1022832 + ... + 1035252.

It is an arithmetic number, because the mean of its divisors is an integer number (659508824).

Almost surely, 2^12781730682 is an apocalyptic number.

12781730682 is an abundant number, since it is smaller than the sum of its proper divisors (18874692870).

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

12781730682 is a wasteful number, since it uses less digits than its factorization.

12781730682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20603 (or 20600 counting only the distinct ones).

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

The spelling of 12781730682 in words is "twelve billion, seven hundred eighty-one million, seven hundred thirty thousand, six hundred eighty-two".