12881756686 has 16 divisors (see below), whose sum is σ = 20526224400. Its totient is φ = 6045902208.

The previous prime is 12881756683. The next prime is 12881756731. The reversal of 12881756686 is 68665718821.

It is a self number, because there is not a number n which added to its sum of digits gives 12881756686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881756683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550875 + ... + 1559158.

It is an arithmetic number, because the mean of its divisors is an integer number (1282889025).

Almost surely, 2^12881756686 is an apocalyptic number.

12881756686 is a deficient number, since it is larger than the sum of its proper divisors (7644467714).

12881756686 is a wasteful number, since it uses less digits than its factorization.

12881756686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110163.

The product of its digits is 7741440, while the sum is 58.

The spelling of 12881756686 in words is "twelve billion, eight hundred eighty-one million, seven hundred fifty-six thousand, six hundred eighty-six".