78066768660 has 192 divisors, whose sum is σ = 234348871680. Its totient is φ = 19374082560.

The previous prime is 78066768649. The next prime is 78066768763. The reversal of 78066768660 is 6686766087.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 78066768594 and 78066768603.

It is a congruent number.

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, 14183469 + ... + 14188971.

It is an arithmetic number, because the mean of its divisors is an integer number (1220567040).

Almost surely, 2^78066768660 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 78066768660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117174435840).

78066768660 is an abundant number, since it is smaller than the sum of its proper divisors (156282103020).

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

78066768660 is a wasteful number, since it uses less digits than its factorization.

78066768660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5838 (or 5836 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 60.

The spelling of 78066768660 in words is "seventy-eight billion, sixty-six million, seven hundred sixty-eight thousand, six hundred sixty".