13503640609 has 2 divisors, whose sum is σ = 13503640610. Its totient is φ = 13503640608.

The previous prime is 13503640589. The next prime is 13503640637. The reversal of 13503640609 is 90604630531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12152857600 + 1350783009 = 110240^2 + 36753^2 .

It is a cyclic number.

It is not a de Polignac number, because 13503640609 - 2²¹ = 13501543457 is a prime.

It is not a weakly prime, because it can be changed into another prime (13503640639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6751820304 + 6751820305.

It is an arithmetic number, because the mean of its divisors is an integer number (6751820305).

Almost surely, 2^13503640609 is an apocalyptic number.

It is an amenable number.

13503640609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13503640609 is an equidigital number, since it uses as much as digits as its factorization.

13503640609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 13503640609 in words is "thirteen billion, five hundred three million, six hundred forty thousand, six hundred nine".