12728723772860 has 48 divisors (see below), whose sum is σ = 26826189429312. Its totient is φ = 5073240768000.

The previous prime is 12728723772851. The next prime is 12728723772881. The reversal of 12728723772860 is 6827732782721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12728723772793 and 12728723772802.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 16497710 + ... + 17252010.

It is an arithmetic number, because the mean of its divisors is an integer number (558878946444).

Almost surely, 2^{12728723772860} is an apocalyptic number.

12728723772860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12728723772860 is an abundant number, since it is smaller than the sum of its proper divisors (14097465656452).

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

12728723772860 is a wasteful number, since it uses less digits than its factorization.

12728723772860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757334 (or 757332 counting only the distinct ones).

The product of its (nonzero) digits is 44255232, while the sum is 62.

The spelling of 12728723772860 in words is "twelve trillion, seven hundred twenty-eight billion, seven hundred twenty-three million, seven hundred seventy-two thousand, eight hundred sixty".