2173135608 has 128 divisors (see below), whose sum is σ = 6953779200. Its totient is φ = 615952512.

The previous prime is 2173135607. The next prime is 2173135609. The reversal of 2173135608 is 8065313712.

2173135608 is a `hidden beast` number, since 2 + 17 + 3 + 1 + 35 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (2173135607) and next prime (2173135609).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173135603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186366 + ... + 197682.

It is an arithmetic number, because the mean of its divisors is an integer number (54326400).

Almost surely, 2^2173135608 is an apocalyptic number.

2173135608 is a gapful number since it is divisible by the number (28) 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 2173135608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3476889600).

2173135608 is an abundant number, since it is smaller than the sum of its proper divisors (4780643592).

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

2173135608 is a wasteful number, since it uses less digits than its factorization.

2173135608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466 (or 11456 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 2173135608 is about 46616.9025998082. The cubic root of 2173135608 is about 1295.2758729114.

The spelling of 2173135608 in words is "two billion, one hundred seventy-three million, one hundred thirty-five thousand, six hundred eight".