78861382608 has 40 divisors (see below), whose sum is σ = 210297024256. Its totient is φ = 25439155200.

The previous prime is 78861382591. The next prime is 78861382631. The reversal of 78861382608 is 80628316887.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26497633 + ... + 26500608.

Almost surely, 2^78861382608 is an apocalyptic number.

It is an amenable number.

78861382608 is an abundant number, since it is smaller than the sum of its proper divisors (131435641648).

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

78861382608 is a wasteful number, since it uses less digits than its factorization.

78861382608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52998283 (or 52998277 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 78861382608 in words is "seventy-eight billion, eight hundred sixty-one million, three hundred eighty-two thousand, six hundred eight".