878686335280 has 80 divisors (see below), whose sum is σ = 2201025625344. Its totient is φ = 324300856320.

The previous prime is 878686335277. The next prime is 878686335301. The reversal of 878686335280 is 82533686878.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2298817 + ... + 2653663.

Almost surely, 2^878686335280 is an apocalyptic number.

878686335280 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 878686335280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100512812672).

878686335280 is an abundant number, since it is smaller than the sum of its proper divisors (1322339290064).

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

878686335280 is a wasteful number, since it uses less digits than its factorization.

878686335280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357254 (or 357248 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 878686335280 in words is "eight hundred seventy-eight billion, six hundred eighty-six million, three hundred thirty-five thousand, two hundred eighty".