6878120168 has 32 divisors (see below), whose sum is σ = 13673334600. Its totient is φ = 3232438272.

The previous prime is 6878120149. The next prime is 6878120173. The reversal of 6878120168 is 8610218786.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5520787204 + 1357332964 = 74302^2 + 36842^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69548 + ... + 136356.

Almost surely, 2^6878120168 is an apocalyptic number.

6878120168 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6878120168 is a deficient number, since it is larger than the sum of its proper divisors (6795214432).

6878120168 is a wasteful number, since it uses less digits than its factorization.

6878120168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67589 (or 67585 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 6878120168 is about 82934.4329455504. The cubic root of 6878120168 is about 1901.7638438583.

The spelling of 6878120168 in words is "six billion, eight hundred seventy-eight million, one hundred twenty thousand, one hundred sixty-eight".