12687928901 has 2 divisors, whose sum is σ = 12687928902. Its totient is φ = 12687928900.

The previous prime is 12687928867. The next prime is 12687928919. The reversal of 12687928901 is 10982978621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9087808900 + 3600120001 = 95330^2 + 60001^2 .

It is an emirp because it is prime and its reverse (10982978621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12687928901 - 2¹⁰ = 12687927877 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 (12687921901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343964450 + 6343964451.

It is an arithmetic number, because the mean of its divisors is an integer number (6343964451).

Almost surely, 2^12687928901 is an apocalyptic number.

It is an amenable number.

12687928901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12687928901 is an equidigital number, since it uses as much as digits as its factorization.

12687928901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 12687928901 in words is "twelve billion, six hundred eighty-seven million, nine hundred twenty-eight thousand, nine hundred one".