6539159065 has 16 divisors (see below), whose sum is σ = 8174453760. Its totient is φ = 5016116160.

The previous prime is 6539159059. The next prime is 6539159083. The reversal of 6539159065 is 5609519356.

It is a happy number.

It is not a de Polignac number, because 6539159065 - 2⁷ = 6539158937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176629 + ... + 210418.

It is an arithmetic number, because the mean of its divisors is an integer number (510903360).

Almost surely, 2^6539159065 is an apocalyptic number.

It is an amenable number.

6539159065 is a deficient number, since it is larger than the sum of its proper divisors (1635294695).

6539159065 is a wasteful number, since it uses less digits than its factorization.

6539159065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387192.

The product of its (nonzero) digits is 1093500, while the sum is 49.

The square root of 6539159065 is about 80865.0670252613. The cubic root of 6539159065 is about 1869.9958119955.

The spelling of 6539159065 in words is "six billion, five hundred thirty-nine million, one hundred fifty-nine thousand, sixty-five".