6779986218 has 24 divisors (see below), whose sum is σ = 14702777856. Its totient is φ = 2258025000.

The previous prime is 6779986217. The next prime is 6779986231. The reversal of 6779986218 is 8126899776.

It is not an unprimeable number, because it can be changed into a prime (6779986211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142908 + ... + 184343.

It is an arithmetic number, because the mean of its divisors is an integer number (612615744).

Almost surely, 2^6779986218 is an apocalyptic number.

6779986218 is an abundant number, since it is smaller than the sum of its proper divisors (7922791638).

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

6779986218 is a wasteful number, since it uses less digits than its factorization.

6779986218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328410 (or 328407 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 6779986218 is about 82340.6717121011. The cubic root of 6779986218 is about 1892.6759792776.

The spelling of 6779986218 in words is "six billion, seven hundred seventy-nine million, nine hundred eighty-six thousand, two hundred eighteen".