216268411 has 2 divisors, whose sum is σ = 216268412. Its totient is φ = 216268410.

The previous prime is 216268361. The next prime is 216268417. The reversal of 216268411 is 114862612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216268411 - 2²³ = 207879803 is a prime.

It is equal to p_11928442 and since 216268411 and 11928442 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (216268417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108134205 + 108134206.

It is an arithmetic number, because the mean of its divisors is an integer number (108134206).

Almost surely, 2^216268411 is an apocalyptic number.

216268411 is a deficient number, since it is larger than the sum of its proper divisors (1).

216268411 is an equidigital number, since it uses as much as digits as its factorization.

216268411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 31.

The square root of 216268411 is about 14706.0671493095. The cubic root of 216268411 is about 600.2484258305.

The spelling of 216268411 in words is "two hundred sixteen million, two hundred sixty-eight thousand, four hundred eleven".