14219566861 has 2 divisors, whose sum is σ = 14219566862. Its totient is φ = 14219566860.

The previous prime is 14219566849. The next prime is 14219566871. The reversal of 14219566861 is 16866591241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12719553961 + 1500012900 = 112781^2 + 38730^2 .

It is a cyclic number.

It is not a de Polignac number, because 14219566861 - 2⁷ = 14219566733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14219566831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7109783430 + 7109783431.

It is an arithmetic number, because the mean of its divisors is an integer number (7109783431).

Almost surely, 2^14219566861 is an apocalyptic number.

It is an amenable number.

14219566861 is a deficient number, since it is larger than the sum of its proper divisors (1).

14219566861 is an equidigital number, since it uses as much as digits as its factorization.

14219566861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 49.

The spelling of 14219566861 in words is "fourteen billion, two hundred nineteen million, five hundred sixty-six thousand, eight hundred sixty-one".