216707541811 has 2 divisors, whose sum is σ = 216707541812. Its totient is φ = 216707541810.

The previous prime is 216707541781. The next prime is 216707541821. The reversal of 216707541811 is 118145707612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216707541811 - 2¹⁵ = 216707509043 is a prime.

It is not a weakly prime, because it can be changed into another prime (216707541821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108353770905 + 108353770906.

It is an arithmetic number, because the mean of its divisors is an integer number (108353770906).

Almost surely, 2^216707541811 is an apocalyptic number.

216707541811 is a deficient number, since it is larger than the sum of its proper divisors (1).

216707541811 is an equidigital number, since it uses as much as digits as its factorization.

216707541811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 94080, while the sum is 43.

The spelling of 216707541811 in words is "two hundred sixteen billion, seven hundred seven million, five hundred forty-one thousand, eight hundred eleven".