7852578668 has 12 divisors (see below), whose sum is σ = 14991286632. Its totient is φ = 3569353920.

The previous prime is 7852578661. The next prime is 7852578673. The reversal of 7852578668 is 8668752587.

It is a self number, because there is not a number n which added to its sum of digits gives 7852578668.

It is not an unprimeable number, because it can be changed into a prime (7852578661) 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, 89233805 + ... + 89233892.

It is an arithmetic number, because the mean of its divisors is an integer number (1249273886).

Almost surely, 2^7852578668 is an apocalyptic number.

It is an amenable number.

7852578668 is a deficient number, since it is larger than the sum of its proper divisors (7138707964).

7852578668 is a wasteful number, since it uses less digits than its factorization.

7852578668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178467712 (or 178467710 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 62.

The square root of 7852578668 is about 88614.7768038717. The cubic root of 7852578668 is about 1987.6386448539.

The spelling of 7852578668 in words is "seven billion, eight hundred fifty-two million, five hundred seventy-eight thousand, six hundred sixty-eight".