84787804880 has 80 divisors (see below), whose sum is σ = 203578113024. Its totient is φ = 32806993920.

The previous prime is 84787804879. The next prime is 84787804883. The reversal of 84787804880 is 8840878748.

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 (62).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84787804883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7193552 + ... + 7205328.

Almost surely, 2^84787804880 is an apocalyptic number.

84787804880 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 84787804880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101789056512).

84787804880 is an abundant number, since it is smaller than the sum of its proper divisors (118790308144).

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

84787804880 is a wasteful number, since it uses less digits than its factorization.

84787804880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14724 (or 14718 counting only the distinct ones).

The product of its (nonzero) digits is 25690112, while the sum is 62.

The spelling of 84787804880 in words is "eighty-four billion, seven hundred eighty-seven million, eight hundred four thousand, eight hundred eighty".