216668777031163 has 2 divisors, whose sum is σ = 216668777031164. Its totient is φ = 216668777031162.

The previous prime is 216668777031143. The next prime is 216668777031167. The reversal of 216668777031163 is 361130777866612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216668777031163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216668777031095 and 216668777031104.

It is not a weakly prime, because it can be changed into another prime (216668777031167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108334388515581 + 108334388515582.

It is an arithmetic number, because the mean of its divisors is an integer number (108334388515582).

Almost surely, 2^{216668777031163} is an apocalyptic number.

216668777031163 is a deficient number, since it is larger than the sum of its proper divisors (1).

216668777031163 is an equidigital number, since it uses as much as digits as its factorization.

216668777031163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 216668777031163 in words is "two hundred sixteen trillion, six hundred sixty-eight billion, seven hundred seventy-seven million, thirty-one thousand, one hundred sixty-three".