6665506101 has 24 divisors (see below), whose sum is σ = 9726780960. Its totient is φ = 4398289056.

The previous prime is 6665506091. The next prime is 6665506117. The reversal of 6665506101 is 1016055666.

It is not a de Polignac number, because 6665506101 - 2⁵ = 6665506069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665506171) 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 23 ways as a sum of consecutive naturals, for example, 344010 + ... + 362868.

It is an arithmetic number, because the mean of its divisors is an integer number (405282540).

Almost surely, 2^6665506101 is an apocalyptic number.

It is an amenable number.

6665506101 is a deficient number, since it is larger than the sum of its proper divisors (3061274859).

6665506101 is a wasteful number, since it uses less digits than its factorization.

6665506101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19265 (or 19262 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6665506101 is about 81642.5507992003. The cubic root of 6665506101 is about 1881.9628380134.

The spelling of 6665506101 in words is "six billion, six hundred sixty-five million, five hundred six thousand, one hundred one".