13678517497 has 2 divisors, whose sum is σ = 13678517498. Its totient is φ = 13678517496.

The previous prime is 13678517491. The next prime is 13678517513. The reversal of 13678517497 is 79471587631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8645466361 + 5033051136 = 92981^2 + 70944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13678517497 is a prime.

It is not a weakly prime, because it can be changed into another prime (13678517491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6839258748 + 6839258749.

It is an arithmetic number, because the mean of its divisors is an integer number (6839258749).

Almost surely, 2^13678517497 is an apocalyptic number.

It is an amenable number.

13678517497 is a deficient number, since it is larger than the sum of its proper divisors (1).

13678517497 is an equidigital number, since it uses as much as digits as its factorization.

13678517497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 58.

The spelling of 13678517497 in words is "thirteen billion, six hundred seventy-eight million, five hundred seventeen thousand, four hundred ninety-seven".