84478535680 has 384 divisors, whose sum is σ = 266063616000. Its totient is φ = 24940707840.

The previous prime is 84478535629. The next prime is 84478535711. The reversal of 84478535680 is 8653587448.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14978301 + ... + 14983939.

It is an arithmetic number, because the mean of its divisors is an integer number (692874000).

Almost surely, 2^84478535680 is an apocalyptic number.

84478535680 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 84478535680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133031808000).

84478535680 is an abundant number, since it is smaller than the sum of its proper divisors (181585080320).

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

84478535680 is a wasteful number, since it uses less digits than its factorization.

84478535680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703 (or 5683 counting only the distinct ones).

The product of its (nonzero) digits is 25804800, while the sum is 58.

The spelling of 84478535680 in words is "eighty-four billion, four hundred seventy-eight million, five hundred thirty-five thousand, six hundred eighty".