84395136870 has 576 divisors, whose sum is σ = 265022005248. Its totient is φ = 19279814400.

The previous prime is 84395136863. The next prime is 84395136919. The reversal of 84395136870 is 7863159348.

84395136870 is a `hidden beast` number, since 8 + 43 + 9 + 513 + 6 + 87 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 428401612 + ... + 428401808.

It is an arithmetic number, because the mean of its divisors is an integer number (460107648).

Almost surely, 2^84395136870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84395136870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132511002624).

84395136870 is an abundant number, since it is smaller than the sum of its proper divisors (180626868378).

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

84395136870 is a wasteful number, since it uses less digits than its factorization.

84395136870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 84395136870 in words is "eighty-four billion, three hundred ninety-five million, one hundred thirty-six thousand, eight hundred seventy".