878168859540 has 288 divisors, whose sum is σ = 3074934804480. Its totient is φ = 186113362176.

The previous prime is 878168859523. The next prime is 878168859569. The reversal of 878168859540 is 45958861878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2458177 + ... + 2792663.

It is an arithmetic number, because the mean of its divisors is an integer number (10676856960).

Almost surely, 2^878168859540 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 878168859540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537467402240).

878168859540 is an abundant number, since it is smaller than the sum of its proper divisors (2196765944940).

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

878168859540 is a wasteful number, since it uses less digits than its factorization.

878168859540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334579 (or 334570 counting only the distinct ones).

The product of its (nonzero) digits is 154828800, while the sum is 69.

The spelling of 878168859540 in words is "eight hundred seventy-eight billion, one hundred sixty-eight million, eight hundred fifty-nine thousand, five hundred forty".