7668128878 has 8 divisors (see below), whose sum is σ = 11528158968. Its totient is φ = 3825409224.

The previous prime is 7668128857. The next prime is 7668128879. The reversal of 7668128878 is 8788218667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7668128879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4326501 + ... + 4328272.

It is an arithmetic number, because the mean of its divisors is an integer number (1441019871).

Almost surely, 2^7668128878 is an apocalyptic number.

7668128878 is a deficient number, since it is larger than the sum of its proper divisors (3860030090).

7668128878 is a wasteful number, since it uses less digits than its factorization.

7668128878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8655218.

The product of its digits is 14450688, while the sum is 61.

The square root of 7668128878 is about 87567.8529941211. The cubic root of 7668128878 is about 1971.9525830096.

The spelling of 7668128878 in words is "seven billion, six hundred sixty-eight million, one hundred twenty-eight thousand, eight hundred seventy-eight".