6495115543 has 4 divisors (see below), whose sum is σ = 7422989200. Its totient is φ = 5567241888.

The previous prime is 6495115537. The next prime is 6495115579. The reversal of 6495115543 is 3455115946.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6495115543 - 2²⁵ = 6461561111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6495115543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6495115513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463936818 + ... + 463936831.

It is an arithmetic number, because the mean of its divisors is an integer number (1855747300).

Almost surely, 2^6495115543 is an apocalyptic number.

6495115543 is a deficient number, since it is larger than the sum of its proper divisors (927873657).

6495115543 is an equidigital number, since it uses as much as digits as its factorization.

6495115543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927873656.

The product of its digits is 324000, while the sum is 43.

The square root of 6495115543 is about 80592.2796736759. The cubic root of 6495115543 is about 1865.7879922851.

The spelling of 6495115543 in words is "six billion, four hundred ninety-five million, one hundred fifteen thousand, five hundred forty-three".