1668226546223 has 2 divisors, whose sum is σ = 1668226546224. Its totient is φ = 1668226546222.

The previous prime is 1668226546183. The next prime is 1668226546277. The reversal of 1668226546223 is 3226456228661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1668226546223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668226543223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834113273111 + 834113273112.

It is an arithmetic number, because the mean of its divisors is an integer number (834113273112).

Almost surely, 2^{1668226546223} is an apocalyptic number.

1668226546223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668226546223 is an equidigital number, since it uses as much as digits as its factorization.

1668226546223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 53.

The spelling of 1668226546223 in words is "one trillion, six hundred sixty-eight billion, two hundred twenty-six million, five hundred forty-six thousand, two hundred twenty-three".