6678969128 has 32 divisors (see below), whose sum is σ = 13495510560. Its totient is φ = 3080514240.

The previous prime is 6678969119. The next prime is 6678969137. The reversal of 6678969128 is 8219698766.

It is an interprime number because it is at equal distance from previous prime (6678969119) and next prime (6678969137).

It is a super-2 number, since 2×6678969128² = 89217257225554160768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138251 + ... + 180197.

It is an arithmetic number, because the mean of its divisors is an integer number (421734705).

Almost surely, 2^6678969128 is an apocalyptic number.

It is an amenable number.

6678969128 is an abundant number, since it is smaller than the sum of its proper divisors (6816541432).

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

6678969128 is a wasteful number, since it uses less digits than its factorization.

6678969128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43497 (or 43493 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 62.

The square root of 6678969128 is about 81724.9602508316. The cubic root of 6678969128 is about 1883.2290522955.

The spelling of 6678969128 in words is "six billion, six hundred seventy-eight million, nine hundred sixty-nine thousand, one hundred twenty-eight".