6668505135 has 48 divisors (see below), whose sum is σ = 11677236480. Its totient is φ = 3520258560.

The previous prime is 6668505133. The next prime is 6668505167. The reversal of 6668505135 is 5315058666.

It is not a de Polignac number, because 6668505135 - 2¹ = 6668505133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668505133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1983586 + ... + 1986944.

It is an arithmetic number, because the mean of its divisors is an integer number (243275760).

Almost surely, 2^6668505135 is an apocalyptic number.

6668505135 is a deficient number, since it is larger than the sum of its proper divisors (5008731345).

6668505135 is a wasteful number, since it uses less digits than its factorization.

6668505135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3805 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 6668505135 is about 81660.9155900177. The cubic root of 6668505135 is about 1882.2450483551.

The spelling of 6668505135 in words is "six billion, six hundred sixty-eight million, five hundred five thousand, one hundred thirty-five".