6535682172 has 18 divisors (see below), whose sum is σ = 16520752248. Its totient is φ = 2178560712.

The previous prime is 6535682171. The next prime is 6535682173. The reversal of 6535682172 is 2712865356.

6535682172 is a `hidden beast` number, since 65 + 3 + 568 + 21 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (6535682171) and next prime (6535682173).

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6535682171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90773328 + ... + 90773399.

Almost surely, 2^6535682172 is an apocalyptic number.

It is an amenable number.

6535682172 is an abundant number, since it is smaller than the sum of its proper divisors (9985070076).

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

6535682172 is a wasteful number, since it uses less digits than its factorization.

6535682172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181546737 (or 181546732 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 6535682172 is about 80843.5660519747. The cubic root of 6535682172 is about 1869.6643255377.

The spelling of 6535682172 in words is "six billion, five hundred thirty-five million, six hundred eighty-two thousand, one hundred seventy-two".