2116452650209 has 2 divisors, whose sum is σ = 2116452650210. Its totient is φ = 2116452650208.

The previous prime is 2116452650183. The next prime is 2116452650233. The reversal of 2116452650209 is 9020562546112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1692788349184 + 423664301025 = 1301072^2 + 650895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2116452650209 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116452650509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058226325104 + 1058226325105.

It is an arithmetic number, because the mean of its divisors is an integer number (1058226325105).

Almost surely, 2^{2116452650209} is an apocalyptic number.

It is an amenable number.

2116452650209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116452650209 is an equidigital number, since it uses as much as digits as its factorization.

2116452650209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 2116452650209 in words is "two trillion, one hundred sixteen billion, four hundred fifty-two million, six hundred fifty thousand, two hundred nine".