2116640137 has 2 divisors, whose sum is σ = 2116640138. Its totient is φ = 2116640136.

The previous prime is 2116640111. The next prime is 2116640209. The reversal of 2116640137 is 7310466112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1633695561 + 482944576 = 40419^2 + 21976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116640137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2116640099 and 2116640108.

It is not a weakly prime, because it can be changed into another prime (2116640237) 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 as a sum of consecutive naturals, namely, 1058320068 + 1058320069.

It is an arithmetic number, because the mean of its divisors is an integer number (1058320069).

Almost surely, 2^2116640137 is an apocalyptic number.

It is an amenable number.

2116640137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116640137 is an equidigital number, since it uses as much as digits as its factorization.

2116640137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 2116640137 is about 46006.9574847109. The cubic root of 2116640137 is about 1283.9526532248.

The spelling of 2116640137 in words is "two billion, one hundred sixteen million, six hundred forty thousand, one hundred thirty-seven".