6561116703 has 12 divisors (see below), whose sum is σ = 9606993760. Its totient is φ = 4314158496.

The previous prime is 6561116701. The next prime is 6561116711. The reversal of 6561116703 is 3076111656.

It is not a de Polignac number, because 6561116703 - 2¹ = 6561116701 is a prime.

It is a super-3 number, since 3×6561116703³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6561116701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4992583 + ... + 4993896.

Almost surely, 2^6561116703 is an apocalyptic number.

6561116703 is a deficient number, since it is larger than the sum of its proper divisors (3045877057).

6561116703 is a wasteful number, since it uses less digits than its factorization.

6561116703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9986558 (or 9986555 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 6561116703 is about 81000.7203856855. The cubic root of 6561116703 is about 1872.0865404533.

The spelling of 6561116703 in words is "six billion, five hundred sixty-one million, one hundred sixteen thousand, seven hundred three".