13538307473 has 2 divisors, whose sum is σ = 13538307474. Its totient is φ = 13538307472.

The previous prime is 13538307469. The next prime is 13538307533. The reversal of 13538307473 is 37470383531.

13538307473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13302623569 + 235683904 = 115337^2 + 15352^2 .

It is a cyclic number.

It is not a de Polignac number, because 13538307473 - 2² = 13538307469 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13538307413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6769153736 + 6769153737.

It is an arithmetic number, because the mean of its divisors is an integer number (6769153737).

Almost surely, 2^13538307473 is an apocalyptic number.

It is an amenable number.

13538307473 is a deficient number, since it is larger than the sum of its proper divisors (1).

13538307473 is an equidigital number, since it uses as much as digits as its factorization.

13538307473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 13538307473 in words is "thirteen billion, five hundred thirty-eight million, three hundred seven thousand, four hundred seventy-three".