12842781808 has 20 divisors (see below), whose sum is σ = 25007935600. Its totient is φ = 6389121024.

The previous prime is 12842781803. The next prime is 12842781817. The reversal of 12842781808 is 80818724821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12842781803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013585 + ... + 2019952.

It is an arithmetic number, because the mean of its divisors is an integer number (1250396780).

Almost surely, 2^12842781808 is an apocalyptic number.

It is an amenable number.

12842781808 is a deficient number, since it is larger than the sum of its proper divisors (12165153792).

12842781808 is a wasteful number, since it uses less digits than its factorization.

12842781808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033744 (or 4033738 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 49.

The spelling of 12842781808 in words is "twelve billion, eight hundred forty-two million, seven hundred eighty-one thousand, eight hundred eight".