945666968839 has 2 divisors, whose sum is σ = 945666968840. Its totient is φ = 945666968838.

The previous prime is 945666968791. The next prime is 945666968843. The reversal of 945666968839 is 938869666549.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 945666968839 - 2⁷ = 945666968711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (945666968539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472833484419 + 472833484420.

It is an arithmetic number, because the mean of its divisors is an integer number (472833484420).

Almost surely, 2^945666968839 is an apocalyptic number.

945666968839 is a deficient number, since it is larger than the sum of its proper divisors (1).

945666968839 is an equidigital number, since it uses as much as digits as its factorization.

945666968839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3627970560, while the sum is 79.

The spelling of 945666968839 in words is "nine hundred forty-five billion, six hundred sixty-six million, nine hundred sixty-eight thousand, eight hundred thirty-nine".