7678156064 has 24 divisors (see below), whose sum is σ = 15179633280. Its totient is φ = 3823011136.

The previous prime is 7678156001. The next prime is 7678156099. The reversal of 7678156064 is 4606518767.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494324 + ... + 509619.

It is an arithmetic number, because the mean of its divisors is an integer number (632484720).

Almost surely, 2^7678156064 is an apocalyptic number.

It is an amenable number.

7678156064 is a deficient number, since it is larger than the sum of its proper divisors (7501477216).

7678156064 is a wasteful number, since it uses less digits than its factorization.

7678156064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004192 (or 1004184 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 50.

The square root of 7678156064 is about 87625.0880969600. The cubic root of 7678156064 is about 1972.8117462274.

The spelling of 7678156064 in words is "seven billion, six hundred seventy-eight million, one hundred fifty-six thousand, sixty-four".