84578178048 has 792 divisors, whose sum is σ = 303588637632. Its totient is φ = 20426784768.

The previous prime is 84578178037. The next prime is 84578178053. The reversal of 84578178048 is 84087187548.

It is a junction number, because it is equal to n+sod(n) for n = 84578177982 and 84578178000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2285896686 + ... + 2285896722.

Almost surely, 2^84578178048 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 84578178048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151794318816).

84578178048 is an abundant number, since it is smaller than the sum of its proper divisors (219010459584).

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

84578178048 is a wasteful number, since it uses less digits than its factorization.

84578178048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 16056320, while the sum is 60.

The spelling of 84578178048 in words is "eighty-four billion, five hundred seventy-eight million, one hundred seventy-eight thousand, forty-eight".