6505616511 has 24 divisors (see below), whose sum is σ = 10053753840. Its totient is φ = 4041446400.

The previous prime is 6505616479. The next prime is 6505616519. The reversal of 6505616511 is 1156165056.

It is not a de Polignac number, because 6505616511 - 2⁵ = 6505616479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505616519) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 301410 + ... + 322271.

It is an arithmetic number, because the mean of its divisors is an integer number (418906410).

Almost surely, 2^6505616511 is an apocalyptic number.

6505616511 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6505616511 is a deficient number, since it is larger than the sum of its proper divisors (3548137329).

6505616511 is a wasteful number, since it uses less digits than its factorization.

6505616511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623767 (or 623764 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 6505616511 is about 80657.4020843716. The cubic root of 6505616511 is about 1866.7929541721.

The spelling of 6505616511 in words is "six billion, five hundred five million, six hundred sixteen thousand, five hundred eleven".