84878720000 has 110 divisors (see below), whose sum is σ = 212026917168. Its totient is φ = 33951232000.

The previous prime is 84878719993. The next prime is 84878720021. The reversal of 84878720000 is 2787848.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 573689 + ... + 706311.

Almost surely, 2^84878720000 is an apocalyptic number.

84878720000 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 84878720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106013458584).

84878720000 is an abundant number, since it is smaller than the sum of its proper divisors (127148197168).

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

84878720000 is an equidigital number, since it uses as much as digits as its factorization.

84878720000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132663 (or 132630 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 84878720000 in words is "eighty-four billion, eight hundred seventy-eight million, seven hundred twenty thousand".