78666482880 has 448 divisors, whose sum is σ = 288667545600. Its totient is φ = 20145438720.

The previous prime is 78666482879. The next prime is 78666482887. The reversal of 78666482880 is 8828466687.

It is not an unprimeable number, because it can be changed into a prime (78666482887) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 37228704 + ... + 37230816.

It is an arithmetic number, because the mean of its divisors is an integer number (644347200).

Almost surely, 2^78666482880 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 78666482880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144333772800).

78666482880 is an abundant number, since it is smaller than the sum of its proper divisors (210001062720).

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

78666482880 is a wasteful number, since it uses less digits than its factorization.

78666482880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309 (or 2293 counting only the distinct ones).

The product of its (nonzero) digits is 49545216, while the sum is 63.

The spelling of 78666482880 in words is "seventy-eight billion, six hundred sixty-six million, four hundred eighty-two thousand, eight hundred eighty".