20366722667 has 2 divisors, whose sum is σ = 20366722668. Its totient is φ = 20366722666.

The previous prime is 20366722601. The next prime is 20366722669. The reversal of 20366722667 is 76622766302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20366722667 - 2¹² = 20366718571 is a prime.

Together with 20366722669, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20366722669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10183361333 + 10183361334.

It is an arithmetic number, because the mean of its divisors is an integer number (10183361334).

Almost surely, 2^20366722667 is an apocalyptic number.

20366722667 is a deficient number, since it is larger than the sum of its proper divisors (1).

20366722667 is an equidigital number, since it uses as much as digits as its factorization.

20366722667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 20366722667 in words is "twenty billion, three hundred sixty-six million, seven hundred twenty-two thousand, six hundred sixty-seven".