6530665611 has 4 divisors (see below), whose sum is σ = 8707554152. Its totient is φ = 4353777072.

The previous prime is 6530665601. The next prime is 6530665619. The reversal of 6530665611 is 1165660356.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6530665611 - 2²⁶ = 6463556747 is a prime.

It is a super-4 number, since 4×6530665611⁴ (a number of 40 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6530665611.

It is not an unprimeable number, because it can be changed into a prime (6530665619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088444266 + ... + 1088444271.

It is an arithmetic number, because the mean of its divisors is an integer number (2176888538).

Almost surely, 2^6530665611 is an apocalyptic number.

6530665611 is a deficient number, since it is larger than the sum of its proper divisors (2176888541).

6530665611 is a wasteful number, since it uses less digits than its factorization.

6530665611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176888540.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 6530665611 is about 80812.5337494129. The cubic root of 6530665611 is about 1869.1858401170.

The spelling of 6530665611 in words is "six billion, five hundred thirty million, six hundred sixty-five thousand, six hundred eleven".