2668428404207 has 2 divisors, whose sum is σ = 2668428404208. Its totient is φ = 2668428404206.

The previous prime is 2668428404203. The next prime is 2668428404209. The reversal of 2668428404207 is 7024048248662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2668428404207 - 2² = 2668428404203 is a prime.

Together with 2668428404209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2668428404203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334214202103 + 1334214202104.

It is an arithmetic number, because the mean of its divisors is an integer number (1334214202104).

Almost surely, 2^{2668428404207} is an apocalyptic number.

2668428404207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2668428404207 is an equidigital number, since it uses as much as digits as its factorization.

2668428404207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8257536, while the sum is 53.

The spelling of 2668428404207 in words is "two trillion, six hundred sixty-eight billion, four hundred twenty-eight million, four hundred four thousand, two hundred seven".