78646336104 has 256 divisors, whose sum is σ = 236599787520. Its totient is φ = 21313290240.

The previous prime is 78646336099. The next prime is 78646336121. The reversal of 78646336104 is 40163364687.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 89676114 + ... + 89676990.

It is an arithmetic number, because the mean of its divisors is an integer number (924217920).

Almost surely, 2^78646336104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78646336104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118299893760).

78646336104 is an abundant number, since it is smaller than the sum of its proper divisors (157953451416).

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

78646336104 is a wasteful number, since it uses less digits than its factorization.

78646336104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 78646336104 in words is "seventy-eight billion, six hundred forty-six million, three hundred thirty-six thousand, one hundred four".