216351767 has 2 divisors, whose sum is σ = 216351768. Its totient is φ = 216351766.

The previous prime is 216351749. The next prime is 216351769. The reversal of 216351767 is 767153612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216351767 - 2²⁰ = 215303191 is a prime.

Together with 216351769, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216351767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216351769) 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, 108175883 + 108175884.

It is an arithmetic number, because the mean of its divisors is an integer number (108175884).

Almost surely, 2^216351767 is an apocalyptic number.

216351767 is a deficient number, since it is larger than the sum of its proper divisors (1).

216351767 is an equidigital number, since it uses as much as digits as its factorization.

216351767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 38.

The square root of 216351767 is about 14708.9009446661. The cubic root of 216351767 is about 600.3255335331.

The spelling of 216351767 in words is "two hundred sixteen million, three hundred fifty-one thousand, seven hundred sixty-seven".