2130116661 has 12 divisors (see below), whose sum is σ = 3078504000. Its totient is φ = 1419307560.

The previous prime is 2130116633. The next prime is 2130116663. The reversal of 2130116661 is 1666110312.

It is not a de Polignac number, because 2130116661 - 2⁷ = 2130116533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130116663) 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 11 ways as a sum of consecutive naturals, for example, 46411 + ... + 80088.

It is an arithmetic number, because the mean of its divisors is an integer number (256542000).

Almost surely, 2^2130116661 is an apocalyptic number.

It is an amenable number.

2130116661 is a deficient number, since it is larger than the sum of its proper divisors (948387339).

2130116661 is a wasteful number, since it uses less digits than its factorization.

2130116661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128376 (or 128373 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2130116661 is about 46153.1868997147. The cubic root of 2130116661 is about 1286.6718408862.

Adding to 2130116661 its reverse (1666110312), we get a palindrome (3796226973).

The spelling of 2130116661 in words is "two billion, one hundred thirty million, one hundred sixteen thousand, six hundred sixty-one".