13787865017 has 2 divisors, whose sum is σ = 13787865018. Its totient is φ = 13787865016.

The previous prime is 13787864971. The next prime is 13787865029. The reversal of 13787865017 is 71056878731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13594627216 + 193237801 = 116596^2 + 13901^2 .

It is an emirp because it is prime and its reverse (71056878731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13787865017 - 2¹⁰ = 13787863993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13787865017.

It is not a weakly prime, because it can be changed into another prime (13787265017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6893932508 + 6893932509.

It is an arithmetic number, because the mean of its divisors is an integer number (6893932509).

Almost surely, 2^13787865017 is an apocalyptic number.

It is an amenable number.

13787865017 is a deficient number, since it is larger than the sum of its proper divisors (1).

13787865017 is an equidigital number, since it uses as much as digits as its factorization.

13787865017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 53.

The spelling of 13787865017 in words is "thirteen billion, seven hundred eighty-seven million, eight hundred sixty-five thousand, seventeen".