6779328138 has 48 divisors (see below), whose sum is σ = 16126003296. Its totient is φ = 2041247520.

The previous prime is 6779328133. The next prime is 6779328169. The reversal of 6779328138 is 8318239776.

It is not an unprimeable number, because it can be changed into a prime (6779328133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77956 + ... + 140127.

It is an arithmetic number, because the mean of its divisors is an integer number (335958402).

Almost surely, 2^6779328138 is an apocalyptic number.

6779328138 is an abundant number, since it is smaller than the sum of its proper divisors (9346675158).

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

6779328138 is a wasteful number, since it uses less digits than its factorization.

6779328138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218259 (or 218256 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 6779328138 is about 82336.6755340535. The cubic root of 6779328138 is about 1892.6147415667.

The spelling of 6779328138 in words is "six billion, seven hundred seventy-nine million, three hundred twenty-eight thousand, one hundred thirty-eight".