78866302860 has 120 divisors (see below), whose sum is σ = 250387741296. Its totient is φ = 20777592960.

The previous prime is 78866302843. The next prime is 78866302891. The reversal of 78866302860 is 6820366887.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 78866302797 and 78866302806.

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 39 ways as a sum of consecutive naturals, for example, 158811 + ... + 427730.

Almost surely, 2^78866302860 is an apocalyptic number.

It is an amenable number.

78866302860 is an abundant number, since it is smaller than the sum of its proper divisors (171521438436).

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

78866302860 is a wasteful number, since it uses less digits than its factorization.

78866302860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586645 (or 586634 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 78866302860 in words is "seventy-eight billion, eight hundred sixty-six million, three hundred two thousand, eight hundred sixty".