6667539879 has 32 divisors (see below), whose sum is σ = 11936300544. Its totient is φ = 3197220480.

The previous prime is 6667539871. The next prime is 6667539929. The reversal of 6667539879 is 9789357666.

It is not a de Polignac number, because 6667539879 - 2³ = 6667539871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667539871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1107144 + ... + 1113149.

It is an arithmetic number, because the mean of its divisors is an integer number (373009392).

Almost surely, 2^6667539879 is an apocalyptic number.

6667539879 is a deficient number, since it is larger than the sum of its proper divisors (5268760665).

6667539879 is a wasteful number, since it uses less digits than its factorization.

6667539879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220327.

The product of its digits is 102876480, while the sum is 66.

The square root of 6667539879 is about 81655.0052293183. The cubic root of 6667539879 is about 1882.1542266013.

The spelling of 6667539879 in words is "six billion, six hundred sixty-seven million, five hundred thirty-nine thousand, eight hundred seventy-nine".