13680011509 has 2 divisors, whose sum is σ = 13680011510. Its totient is φ = 13680011508.

The previous prime is 13680011479. The next prime is 13680011519. The reversal of 13680011509 is 90511008631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10787938225 + 2892073284 = 103865^2 + 53778^2 .

It is an emirp because it is prime and its reverse (90511008631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13680011509 - 2⁹ = 13680010997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13680011519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6840005754 + 6840005755.

It is an arithmetic number, because the mean of its divisors is an integer number (6840005755).

Almost surely, 2^13680011509 is an apocalyptic number.

It is an amenable number.

13680011509 is a deficient number, since it is larger than the sum of its proper divisors (1).

13680011509 is an equidigital number, since it uses as much as digits as its factorization.

13680011509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 13680011509 in words is "thirteen billion, six hundred eighty million, eleven thousand, five hundred nine".