12806281565720 has 32 divisors (see below), whose sum is σ = 28820150686800. Its totient is φ = 5121442908288.

The previous prime is 12806281565719. The next prime is 12806281565771. The reversal of 12806281565720 is 2756518260821.

It is a happy number.

12806281565720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 33234734 + ... + 33617853.

Almost surely, 2^{12806281565720} is an apocalyptic number.

12806281565720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12806281565720 is an abundant number, since it is smaller than the sum of its proper divisors (16013869121080).

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

12806281565720 is a wasteful number, since it uses less digits than its factorization.

12806281565720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66857387 (or 66857383 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 12806281565720 in words is "twelve trillion, eight hundred six billion, two hundred eighty-one million, five hundred sixty-five thousand, seven hundred twenty".