84578346880 has 128 divisors (see below), whose sum is σ = 211127148000. Its totient is φ = 32358703104.

The previous prime is 84578346829. The next prime is 84578346887. The reversal of 84578346880 is 8864387548.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84578346887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1964626 + ... + 2007214.

Almost surely, 2^84578346880 is an apocalyptic number.

84578346880 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 84578346880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105563574000).

84578346880 is an abundant number, since it is smaller than the sum of its proper divisors (126548801120).

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

84578346880 is a wasteful number, since it uses less digits than its factorization.

84578346880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42744 (or 42732 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 61.

The spelling of 84578346880 in words is "eighty-four billion, five hundred seventy-eight million, three hundred forty-six thousand, eight hundred eighty".