78568931652 has 12 divisors (see below), whose sum is σ = 183327507216. Its totient is φ = 26189643880.

The previous prime is 78568931627. The next prime is 78568931711. The reversal of 78568931652 is 25613986587.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3273705474 + ... + 3273705497.

It is an arithmetic number, because the mean of its divisors is an integer number (15277292268).

Almost surely, 2^78568931652 is an apocalyptic number.

It is an amenable number.

78568931652 is an abundant number, since it is smaller than the sum of its proper divisors (104758575564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78568931652 is a wasteful number, since it uses less digits than its factorization.

78568931652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547410978 (or 6547410976 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 60.

The spelling of 78568931652 in words is "seventy-eight billion, five hundred sixty-eight million, nine hundred thirty-one thousand, six hundred fifty-two".