6535253543 has 16 divisors (see below), whose sum is σ = 8516531520. Its totient is φ = 4866587136.

The previous prime is 6535253479. The next prime is 6535253567. The reversal of 6535253543 is 3453525356.

It is a cyclic number.

It is not a de Polignac number, because 6535253543 - 2⁶ = 6535253479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6535253543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535253843) 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 in 15 ways as a sum of consecutive naturals, for example, 2110688 + ... + 2113781.

It is an arithmetic number, because the mean of its divisors is an integer number (532283220).

Almost surely, 2^6535253543 is an apocalyptic number.

6535253543 is a deficient number, since it is larger than the sum of its proper divisors (1981277977).

6535253543 is a wasteful number, since it uses less digits than its factorization.

6535253543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224506.

The product of its digits is 810000, while the sum is 41.

The square root of 6535253543 is about 80840.9150306947. The cubic root of 6535253543 is about 1869.6234519737.

Adding to 6535253543 its reverse (3453525356), we get a palindrome (9988778899).

The spelling of 6535253543 in words is "six billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred forty-three".