6509144079 has 12 divisors (see below), whose sum is σ = 9403946032. Its totient is φ = 4338576000.

The previous prime is 6509144053. The next prime is 6509144129. The reversal of 6509144079 is 9704419056.

6509144079 is a `hidden beast` number, since 6 + 50 + 91 + 440 + 79 = 666.

It is not a de Polignac number, because 6509144079 - 2⁹ = 6509143567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6509144009) 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 11 ways as a sum of consecutive naturals, for example, 20947 + ... + 116004.

Almost surely, 2^6509144079 is an apocalyptic number.

6509144079 is a deficient number, since it is larger than the sum of its proper divisors (2894801953).

6509144079 is a wasteful number, since it uses less digits than its factorization.

6509144079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142238 (or 142235 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 6509144079 is about 80679.2667232419. The cubic root of 6509144079 is about 1867.1303062220.

The spelling of 6509144079 in words is "six billion, five hundred nine million, one hundred forty-four thousand, seventy-nine".