8002171640 has 16 divisors (see below), whose sum is σ = 18004886280. Its totient is φ = 3200868640.

The previous prime is 8002171631. The next prime is 8002171673. The reversal of 8002171640 is 461712008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100027106 + ... + 100027185.

Almost surely, 2^8002171640 is an apocalyptic number.

It is an amenable number.

8002171640 is an abundant number, since it is smaller than the sum of its proper divisors (10002714640).

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

8002171640 is a wasteful number, since it uses less digits than its factorization.

8002171640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200054302 (or 200054298 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 8002171640 is about 89454.8581129052. The cubic root of 8002171640 is about 2000.1809536274.

Adding to 8002171640 its reverse (461712008), we get a palindrome (8463883648).

The spelling of 8002171640 in words is "eight billion, two million, one hundred seventy-one thousand, six hundred forty".