6779394578 has 16 divisors (see below), whose sum is σ = 11575884096. Its totient is φ = 2947562640.

The previous prime is 6779394569. The next prime is 6779394593. The reversal of 6779394578 is 8754939776.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6698501 + ... + 6699512.

It is an arithmetic number, because the mean of its divisors is an integer number (723492756).

Almost surely, 2^6779394578 is an apocalyptic number.

6779394578 is a deficient number, since it is larger than the sum of its proper divisors (4796489518).

6779394578 is a wasteful number, since it uses less digits than its factorization.

6779394578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13398049.

The product of its digits is 80015040, while the sum is 65.

The square root of 6779394578 is about 82337.0789984682. The cubic root of 6779394578 is about 1892.6209243284.

The spelling of 6779394578 in words is "six billion, seven hundred seventy-nine million, three hundred ninety-four thousand, five hundred seventy-eight".