6807108138 has 16 divisors (see below), whose sum is σ = 13621530720. Its totient is φ = 2267816976.

The previous prime is 6807108137. The next prime is 6807108149. The reversal of 6807108138 is 8318017086.

It is a self number, because there is not a number n which added to its sum of digits gives 6807108138.

It is not an unprimeable number, because it can be changed into a prime (6807108137) 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, 292633 + ... + 315036.

It is an arithmetic number, because the mean of its divisors is an integer number (851345670).

Almost surely, 2^6807108138 is an apocalyptic number.

6807108138 is an abundant number, since it is smaller than the sum of its proper divisors (6814422582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6807108138 is a wasteful number, since it uses less digits than its factorization.

6807108138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609541.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 6807108138 is about 82505.2006724425. The cubic root of 6807108138 is about 1895.1963732514.

The spelling of 6807108138 in words is "six billion, eight hundred seven million, one hundred eight thousand, one hundred thirty-eight".