13728907061 has 2 divisors, whose sum is σ = 13728907062. Its totient is φ = 13728907060.

The previous prime is 13728907043. The next prime is 13728907147. The reversal of 13728907061 is 16070982731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12079328836 + 1649578225 = 109906^2 + 40615^2 .

It is an emirp because it is prime and its reverse (16070982731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13728907061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13728907961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6864453530 + 6864453531.

It is an arithmetic number, because the mean of its divisors is an integer number (6864453531).

Almost surely, 2^13728907061 is an apocalyptic number.

It is an amenable number.

13728907061 is a deficient number, since it is larger than the sum of its proper divisors (1).

13728907061 is an equidigital number, since it uses as much as digits as its factorization.

13728907061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 13728907061 in words is "thirteen billion, seven hundred twenty-eight million, nine hundred seven thousand, sixty-one".