6553615065 has 16 divisors (see below), whose sum is σ = 10486914048. Its totient is φ = 3494884736.

The previous prime is 6553615063. The next prime is 6553615069. The reversal of 6553615065 is 5605163556.

It is a cyclic number.

It is not a de Polignac number, because 6553615065 - 2¹ = 6553615063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6553615063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173512 + ... + 207878.

It is an arithmetic number, because the mean of its divisors is an integer number (655432128).

Almost surely, 2^6553615065 is an apocalyptic number.

It is an amenable number.

6553615065 is a deficient number, since it is larger than the sum of its proper divisors (3933298983).

6553615065 is a wasteful number, since it uses less digits than its factorization.

6553615065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47088.

The product of its (nonzero) digits is 405000, while the sum is 42.

The square root of 6553615065 is about 80954.4011465714. The cubic root of 6553615065 is about 1871.3727863851.

It can be divided in two parts, 65536 and 15065, that added together give a triangular number (80601 = T₄₀₁).

The spelling of 6553615065 in words is "six billion, five hundred fifty-three million, six hundred fifteen thousand, sixty-five".