878781726720 has 680 divisors, whose sum is σ = 3189300311736. Its totient is φ = 231475249152.

The previous prime is 878781726707. The next prime is 878781726769. The reversal of 878781726720 is 27627187878.

It can be written as a sum of positive squares in 4 ways, for example, as 63069290496 + 815712436224 = 251136^2 + 903168^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2999254894 + ... + 2999255186.

Almost surely, 2^878781726720 is an apocalyptic number.

878781726720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878781726720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594650155868).

878781726720 is an abundant number, since it is smaller than the sum of its proper divisors (2310518585016).

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

878781726720 is an equidigital number, since it uses as much as digits as its factorization.

878781726720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 29503488, while the sum is 63.

The spelling of 878781726720 in words is "eight hundred seventy-eight billion, seven hundred eighty-one million, seven hundred twenty-six thousand, seven hundred twenty".