7878007868 has 24 divisors (see below), whose sum is σ = 14017763760. Its totient is φ = 3873260160.

The previous prime is 7878007807. The next prime is 7878007877. The reversal of 7878007868 is 8687008787.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 55898 + ... + 137406.

It is an arithmetic number, because the mean of its divisors is an integer number (584073490).

Almost surely, 2^7878007868 is an apocalyptic number.

It is an amenable number.

7878007868 is a deficient number, since it is larger than the sum of its proper divisors (6139755892).

7878007868 is a wasteful number, since it uses less digits than its factorization.

7878007868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81917 (or 81915 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 59.

The square root of 7878007868 is about 88758.1425447829. The cubic root of 7878007868 is about 1989.7818728450.

The spelling of 7878007868 in words is "seven billion, eight hundred seventy-eight million, seven thousand, eight hundred sixty-eight".