6543253499 has 8 divisors (see below), whose sum is σ = 6834603360. Its totient is φ = 6256285056.

The previous prime is 6543253481. The next prime is 6543253513. The reversal of 6543253499 is 9943523456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6543253499 - 2³² = 2248286203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6543253699) 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 7 ways as a sum of consecutive naturals, for example, 1092302 + ... + 1098275.

It is an arithmetic number, because the mean of its divisors is an integer number (854325420).

Almost surely, 2^6543253499 is an apocalyptic number.

6543253499 is a deficient number, since it is larger than the sum of its proper divisors (291349861).

6543253499 is a wasteful number, since it uses less digits than its factorization.

6543253499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190709.

The product of its digits is 3499200, while the sum is 50.

The square root of 6543253499 is about 80890.3795206822. The cubic root of 6543253499 is about 1870.3860240947.

The spelling of 6543253499 in words is "six billion, five hundred forty-three million, two hundred fifty-three thousand, four hundred ninety-nine".