84785732880 has 80 divisors (see below), whose sum is σ = 267290660160. Its totient is φ = 22226312704.

The previous prime is 84785732879. The next prime is 84785732887. The reversal of 84785732880 is 8823758748.

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

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (84785732887) 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, 2979687 + ... + 3008006.

It is an arithmetic number, because the mean of its divisors is an integer number (3341133252).

Almost surely, 2^84785732880 is an apocalyptic number.

84785732880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84785732880 is an abundant number, since it is smaller than the sum of its proper divisors (182504927280).

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

84785732880 is a wasteful number, since it uses less digits than its factorization.

84785732880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5987768 (or 5987762 counting only the distinct ones).

The product of its (nonzero) digits is 24084480, while the sum is 60.

The spelling of 84785732880 in words is "eighty-four billion, seven hundred eighty-five million, seven hundred thirty-two thousand, eight hundred eighty".