2116640205 has 48 divisors (see below), whose sum is σ = 3834020736. Its totient is φ = 1078197120.

The previous prime is 2116640137. The next prime is 2116640209. The reversal of 2116640205 is 5020466112.

2116640205 is a `hidden beast` number, since 2 + 1 + 16 + 640 + 2 + 0 + 5 = 666.

It is not a de Polignac number, because 2116640205 - 2¹⁷ = 2116509133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116640209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1055734 + ... + 1057736.

It is an arithmetic number, because the mean of its divisors is an integer number (79875432).

Almost surely, 2^2116640205 is an apocalyptic number.

It is an amenable number.

2116640205 is a deficient number, since it is larger than the sum of its proper divisors (1717380531).

2116640205 is a wasteful number, since it uses less digits than its factorization.

2116640205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3055 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2116640205 is about 46006.9582237296. The cubic root of 2116640205 is about 1283.9526669744.

The spelling of 2116640205 in words is "two billion, one hundred sixteen million, six hundred forty thousand, two hundred five".