6535116661 has 8 divisors (see below), whose sum is σ = 6832661760. Its totient is φ = 6238689072.

The previous prime is 6535116629. The next prime is 6535116673. The reversal of 6535116661 is 1666115356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6535116661 - 2⁵ = 6535116629 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 (6535114661) 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 7 ways as a sum of consecutive naturals, for example, 267405 + ... + 290818.

It is an arithmetic number, because the mean of its divisors is an integer number (854082720).

Almost surely, 2^6535116661 is an apocalyptic number.

It is an amenable number.

6535116661 is a deficient number, since it is larger than the sum of its proper divisors (297545099).

6535116661 is a wasteful number, since it uses less digits than its factorization.

6535116661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558755.

The product of its digits is 97200, while the sum is 40.

The square root of 6535116661 is about 80840.0684128855. The cubic root of 6535116661 is about 1869.6103986885.

The spelling of 6535116661 in words is "six billion, five hundred thirty-five million, one hundred sixteen thousand, six hundred sixty-one".