6561713263 has 16 divisors (see below), whose sum is σ = 7828300800. Its totient is φ = 5377622976.

The previous prime is 6561713243. The next prime is 6561713293. The reversal of 6561713263 is 3623171656.

6561713263 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6561713263 - 2⁵ = 6561713231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561713243) 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 15 ways as a sum of consecutive naturals, for example, 484206 + ... + 497572.

It is an arithmetic number, because the mean of its divisors is an integer number (489268800).

Almost surely, 2^6561713263 is an apocalyptic number.

6561713263 is a deficient number, since it is larger than the sum of its proper divisors (1266587537).

6561713263 is a wasteful number, since it uses less digits than its factorization.

6561713263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16446.

The product of its digits is 136080, while the sum is 40.

The square root of 6561713263 is about 81004.4027383697. The cubic root of 6561713263 is about 1872.1432776497.

The spelling of 6561713263 in words is "six billion, five hundred sixty-one million, seven hundred thirteen thousand, two hundred sixty-three".