216748224029 has 2 divisors, whose sum is σ = 216748224030. Its totient is φ = 216748224028.

The previous prime is 216748223971. The next prime is 216748224031. The reversal of 216748224029 is 920422847612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139520925625 + 77227298404 = 373525^2 + 277898^2 .

It is a cyclic number.

It is not a de Polignac number, because 216748224029 - 2³² = 212453256733 is a prime.

Together with 216748224031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216748224229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108374112014 + 108374112015.

It is an arithmetic number, because the mean of its divisors is an integer number (108374112015).

Almost surely, 2^216748224029 is an apocalyptic number.

It is an amenable number.

216748224029 is a deficient number, since it is larger than the sum of its proper divisors (1).

216748224029 is an equidigital number, since it uses as much as digits as its factorization.

216748224029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 216748224029 in words is "two hundred sixteen billion, seven hundred forty-eight million, two hundred twenty-four thousand, twenty-nine".