6520650052172 has 24 divisors (see below), whose sum is σ = 11488127406000. Its totient is φ = 3238329479616.

The previous prime is 6520650052157. The next prime is 6520650052177. The reversal of 6520650052172 is 2712500560256.

It is not an unprimeable number, because it can be changed into a prime (6520650052177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18196643 + ... + 18551525.

It is an arithmetic number, because the mean of its divisors is an integer number (478671975250).

Almost surely, 2^{6520650052172} is an apocalyptic number.

It is an amenable number.

6520650052172 is a deficient number, since it is larger than the sum of its proper divisors (4967477353828).

6520650052172 is a wasteful number, since it uses less digits than its factorization.

6520650052172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385865 (or 385863 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 6520650052172 in words is "six trillion, five hundred twenty billion, six hundred fifty million, fifty-two thousand, one hundred seventy-two".