6978479166 has 12 divisors (see below), whose sum is σ = 15120038232. Its totient is φ = 2326159716.

The previous prime is 6978479129. The next prime is 6978479191. The reversal of 6978479166 is 6619748796.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193846626 + ... + 193846661.

It is an arithmetic number, because the mean of its divisors is an integer number (1260003186).

Almost surely, 2^6978479166 is an apocalyptic number.

6978479166 is an abundant number, since it is smaller than the sum of its proper divisors (8141559066).

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

6978479166 is a wasteful number, since it uses less digits than its factorization.

6978479166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387693295 (or 387693292 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 6978479166 is about 83537.2920676748. The cubic root of 6978479166 is about 1910.9687953653.

The spelling of 6978479166 in words is "six billion, nine hundred seventy-eight million, four hundred seventy-nine thousand, one hundred sixty-six".