13531054517 has 2 divisors, whose sum is σ = 13531054518. Its totient is φ = 13531054516.

The previous prime is 13531054507. The next prime is 13531054529. The reversal of 13531054517 is 71545013531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8462896036 + 5068158481 = 91994^2 + 71191^2 .

It is an emirp because it is prime and its reverse (71545013531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531054517 - 2¹⁰ = 13531053493 is a prime.

It is a super-2 number, since 2×13531054517² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531054507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765527258 + 6765527259.

It is an arithmetic number, because the mean of its divisors is an integer number (6765527259).

Almost surely, 2^13531054517 is an apocalyptic number.

It is an amenable number.

13531054517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531054517 is an equidigital number, since it uses as much as digits as its factorization.

13531054517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31500, while the sum is 35.

The spelling of 13531054517 in words is "thirteen billion, five hundred thirty-one million, fifty-four thousand, five hundred seventeen".