6505651550 has 12 divisors (see below), whose sum is σ = 12100511976. Its totient is φ = 2602260600.

The previous prime is 6505651543. The next prime is 6505651561. The reversal of 6505651550 is 551565056.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65056466 + ... + 65056565.

It is an arithmetic number, because the mean of its divisors is an integer number (1008375998).

Almost surely, 2^6505651550 is an apocalyptic number.

6505651550 is a deficient number, since it is larger than the sum of its proper divisors (5594860426).

6505651550 is a wasteful number, since it uses less digits than its factorization.

6505651550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130113043 (or 130113038 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 38.

The square root of 6505651550 is about 80657.6192929100. The cubic root of 6505651550 is about 1866.7963056577.

The spelling of 6505651550 in words is "six billion, five hundred five million, six hundred fifty-one thousand, five hundred fifty".