6500500605650 has 24 divisors (see below), whose sum is σ = 12091070019684. Its totient is φ = 2600170372800.

The previous prime is 6500500605631. The next prime is 6500500605721. The reversal of 6500500605650 is 565060050056.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3240428414161 + 3260072191489 = 1800119^2 + 1805567^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3940724 + ... + 5341376.

Almost surely, 2^{6500500605650} is an apocalyptic number.

6500500605650 is a deficient number, since it is larger than the sum of its proper divisors (5590569414034).

6500500605650 is a wasteful number, since it uses less digits than its factorization.

6500500605650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493486 (or 1493481 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 38.

The spelling of 6500500605650 in words is "six trillion, five hundred billion, five hundred million, six hundred five thousand, six hundred fifty".