878389394688 has 576 divisors, whose sum is σ = 2903860108800. Its totient is φ = 260050452480.

The previous prime is 878389394671. The next prime is 878389394689. The reversal of 878389394688 is 886493983878.

878389394688 is a `hidden beast` number, since 8 + 78 + 3 + 89 + 3 + 9 + 468 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878389394689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1357633981 + ... + 1357634627.

It is an arithmetic number, because the mean of its divisors is an integer number (5041423800).

Almost surely, 2^878389394688 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 878389394688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451930054400).

878389394688 is an abundant number, since it is smaller than the sum of its proper divisors (2025470714112).

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

878389394688 is a wasteful number, since it uses less digits than its factorization.

878389394688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235 (or 1215 counting only the distinct ones).

The product of its digits is 4013162496, while the sum is 81.

The spelling of 878389394688 in words is "eight hundred seventy-eight billion, three hundred eighty-nine million, three hundred ninety-four thousand, six hundred eighty-eight".