216213266767 has 2 divisors, whose sum is σ = 216213266768. Its totient is φ = 216213266766.

The previous prime is 216213266749. The next prime is 216213266771. The reversal of 216213266767 is 767662312612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216213266767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216213266767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216213266707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108106633383 + 108106633384.

It is an arithmetic number, because the mean of its divisors is an integer number (108106633384).

Almost surely, 2^216213266767 is an apocalyptic number.

216213266767 is a deficient number, since it is larger than the sum of its proper divisors (1).

216213266767 is an equidigital number, since it uses as much as digits as its factorization.

216213266767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1524096, while the sum is 49.

The spelling of 216213266767 in words is "two hundred sixteen billion, two hundred thirteen million, two hundred sixty-six thousand, seven hundred sixty-seven".