216161411 has 2 divisors, whose sum is σ = 216161412. Its totient is φ = 216161410.

The previous prime is 216161377. The next prime is 216161441. The reversal of 216161411 is 114161612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216161411 is a prime.

It is not a weakly prime, because it can be changed into another prime (216161441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108080705 + 108080706.

It is an arithmetic number, because the mean of its divisors is an integer number (108080706).

Almost surely, 2^216161411 is an apocalyptic number.

216161411 is a deficient number, since it is larger than the sum of its proper divisors (1).

216161411 is an equidigital number, since it uses as much as digits as its factorization.

216161411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 23.

The square root of 216161411 is about 14702.4287449387. The cubic root of 216161411 is about 600.1494174173.

The spelling of 216161411 in words is "two hundred sixteen million, one hundred sixty-one thousand, four hundred eleven".