6665065133 has 4 divisors (see below), whose sum is σ = 6688784508. Its totient is φ = 6641345760.

The previous prime is 6665065129. The next prime is 6665065153. The reversal of 6665065133 is 3315605666.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1856058724 + 4809006409 = 43082^2 + 69347^2 .

It is a cyclic number.

It is not a de Polignac number, because 6665065133 - 2² = 6665065129 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 (6665065103) 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, 11859266 + ... + 11859827.

It is an arithmetic number, because the mean of its divisors is an integer number (1672196127).

Almost surely, 2^6665065133 is an apocalyptic number.

It is an amenable number.

6665065133 is a deficient number, since it is larger than the sum of its proper divisors (23719375).

6665065133 is a wasteful number, since it uses less digits than its factorization.

6665065133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23719374.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 6665065133 is about 81639.8501529737. The cubic root of 6665065133 is about 1881.9213356039.

The spelling of 6665065133 in words is "six billion, six hundred sixty-five million, sixty-five thousand, one hundred thirty-three".