13540420535 has 4 divisors (see below), whose sum is σ = 16248504648. Its totient is φ = 10832336424.

The previous prime is 13540420513. The next prime is 13540420561. The reversal of 13540420535 is 53502404531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53502404531 = 823 ⋅65008997.

It is a cyclic number.

It is not a de Polignac number, because 13540420535 - 2¹⁴ = 13540404151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1354042049 + ... + 1354042058.

It is an arithmetic number, because the mean of its divisors is an integer number (4062126162).

Almost surely, 2^13540420535 is an apocalyptic number.

13540420535 is a deficient number, since it is larger than the sum of its proper divisors (2708084113).

13540420535 is an equidigital number, since it uses as much as digits as its factorization.

13540420535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708084112.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 13540420535 in words is "thirteen billion, five hundred forty million, four hundred twenty thousand, five hundred thirty-five".