12938728666652 has 12 divisors (see below), whose sum is σ = 22643205409776. Its totient is φ = 6469241406720.

The previous prime is 12938728666651. The next prime is 12938728666769. The reversal of 12938728666652 is 25666682783921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12938728666651) 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, 30494624 + ... + 30916007.

It is an arithmetic number, because the mean of its divisors is an integer number (1886933784148).

Almost surely, 2^{12938728666652} is an apocalyptic number.

It is an amenable number.

12938728666652 is a deficient number, since it is larger than the sum of its proper divisors (9704476743124).

12938728666652 is a wasteful number, since it uses less digits than its factorization.

12938728666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61463308 (or 61463306 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 71.

The spelling of 12938728666652 in words is "twelve trillion, nine hundred thirty-eight billion, seven hundred twenty-eight million, six hundred sixty-six thousand, six hundred fifty-two".