6510650506665 has 32 divisors (see below), whose sum is σ = 10816014067200. Its totient is φ = 3340239517440.

The previous prime is 6510650506643. The next prime is 6510650506667. The reversal of 6510650506665 is 5666050560156.

It is not a de Polignac number, because 6510650506665 - 2⁹ = 6510650506153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6510650506667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27496530 + ... + 27732299.

It is an arithmetic number, because the mean of its divisors is an integer number (338000439600).

Almost surely, 2^{6510650506665} is an apocalyptic number.

It is an amenable number.

6510650506665 is a deficient number, since it is larger than the sum of its proper divisors (4305363560535).

6510650506665 is a wasteful number, since it uses less digits than its factorization.

6510650506665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55229137.

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 6510650506665 in words is "six trillion, five hundred ten billion, six hundred fifty million, five hundred six thousand, six hundred sixty-five".