6650506161 has 16 divisors (see below), whose sum is σ = 10610494720. Its totient is φ = 4092618960.

The previous prime is 6650506153. The next prime is 6650506183. The reversal of 6650506161 is 1616050566.

It is not a de Polignac number, because 6650506161 - 2³ = 6650506153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6650506061) 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 15 ways as a sum of consecutive naturals, for example, 9473305 + ... + 9474006.

It is an arithmetic number, because the mean of its divisors is an integer number (663155920).

Almost surely, 2^6650506161 is an apocalyptic number.

It is an amenable number.

6650506161 is a deficient number, since it is larger than the sum of its proper divisors (3959988559).

6650506161 is a wasteful number, since it uses less digits than its factorization.

6650506161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18947333 (or 18947327 counting only the distinct ones).

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

The square root of 6650506161 is about 81550.6355646601. The cubic root of 6650506161 is about 1880.5500654828.

The spelling of 6650506161 in words is "six billion, six hundred fifty million, five hundred six thousand, one hundred sixty-one".