2216523769 has 2 divisors, whose sum is σ = 2216523770. Its totient is φ = 2216523768.

The previous prime is 2216523763. The next prime is 2216523773. The reversal of 2216523769 is 9673256122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1824998400 + 391525369 = 42720^2 + 19787^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216523769 - 2¹¹ = 2216521721 is a prime.

It is a super-2 number, since 2×2216523769² = 9825955237083930722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2216523763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108261884 + 1108261885.

It is an arithmetic number, because the mean of its divisors is an integer number (1108261885).

Almost surely, 2^2216523769 is an apocalyptic number.

It is an amenable number.

2216523769 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216523769 is an equidigital number, since it uses as much as digits as its factorization.

2216523769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 2216523769 is about 47079.9720581905. The cubic root of 2216523769 is about 1303.8394910851.

The spelling of 2216523769 in words is "two billion, two hundred sixteen million, five hundred twenty-three thousand, seven hundred sixty-nine".