6550802865 has 24 divisors (see below), whose sum is σ = 12022651368. Its totient is φ = 3288245760.

The previous prime is 6550802821. The next prime is 6550802873. The reversal of 6550802865 is 5682080556.

6550802865 is a `hidden beast` number, since 65 + 508 + 0 + 2 + 86 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 184199184 + 6366603681 = 13572^2 + 79791^2 .

It is not a de Polignac number, because 6550802865 - 2⁷ = 6550802737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6550802865.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4280806 + ... + 4282335.

It is an arithmetic number, because the mean of its divisors is an integer number (500943807).

Almost surely, 2^6550802865 is an apocalyptic number.

It is an amenable number.

6550802865 is a deficient number, since it is larger than the sum of its proper divisors (5471848503).

6550802865 is a wasteful number, since it uses less digits than its factorization.

6550802865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563169 (or 8563166 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 6550802865 is about 80937.0302457410. The cubic root of 6550802865 is about 1871.1050752350.

The spelling of 6550802865 in words is "six billion, five hundred fifty million, eight hundred two thousand, eight hundred sixty-five".