84170085120 has 1152 divisors, whose sum is σ = 352261324800. Its totient is φ = 18811699200.

The previous prime is 84170085119. The next prime is 84170085133. The reversal of 84170085120 is 2158007148.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 310590585 + ... + 310590855.

It is an arithmetic number, because the mean of its divisors is an integer number (305782400).

Almost surely, 2^84170085120 is an apocalyptic number.

84170085120 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 84170085120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176130662400).

84170085120 is an abundant number, since it is smaller than the sum of its proper divisors (268091239680).

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

84170085120 is a wasteful number, since it uses less digits than its factorization.

84170085120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The spelling of 84170085120 in words is "eighty-four billion, one hundred seventy million, eighty-five thousand, one hundred twenty".