83161605184 has 84 divisors (see below), whose sum is σ = 192425505420. Its totient is φ = 35555466240.

The previous prime is 83161605181. The next prime is 83161605199. The reversal of 83161605184 is 48150616138.

It can be written as a sum of positive squares in 2 ways, for example, as 1594245184 + 81567360000 = 39928^2 + 285600^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 83161605184.

It is not an unprimeable number, because it can be changed into a prime (83161605181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1288762 + ... + 1351750.

Almost surely, 2^83161605184 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83161605184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96212752710).

83161605184 is an abundant number, since it is smaller than the sum of its proper divisors (109263900236).

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

83161605184 is a wasteful number, since it uses less digits than its factorization.

83161605184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63436 (or 63419 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 83161605184 in words is "eighty-three billion, one hundred sixty-one million, six hundred five thousand, one hundred eighty-four".