13540825717 has 4 divisors (see below), whose sum is σ = 13542218496. Its totient is φ = 13539432940.

The previous prime is 13540825693. The next prime is 13540825751. The reversal of 13540825717 is 71752804531.

13540825717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13540825717 - 2²³ = 13532437109 is a prime.

It is a super-2 number, since 2×13540825717² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13540825777) 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 in 3 ways as a sum of consecutive naturals, for example, 681703 + ... + 701284.

It is an arithmetic number, because the mean of its divisors is an integer number (3385554624).

Almost surely, 2^13540825717 is an apocalyptic number.

It is an amenable number.

13540825717 is a deficient number, since it is larger than the sum of its proper divisors (1392779).

13540825717 is an equidigital number, since it uses as much as digits as its factorization.

13540825717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392778.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 13540825717 in words is "thirteen billion, five hundred forty million, eight hundred twenty-five thousand, seven hundred seventeen".