22066744657 has 2 divisors, whose sum is σ = 22066744658. Its totient is φ = 22066744656.

The previous prime is 22066744649. The next prime is 22066744681. The reversal of 22066744657 is 75644766022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14574284176 + 7492460481 = 120724^2 + 86559^2 .

It is a cyclic number.

It is not a de Polignac number, because 22066744657 - 2³ = 22066744649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22066744657.

It is not a weakly prime, because it can be changed into another prime (22066748657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11033372328 + 11033372329.

It is an arithmetic number, because the mean of its divisors is an integer number (11033372329).

Almost surely, 2^22066744657 is an apocalyptic number.

It is an amenable number.

22066744657 is a deficient number, since it is larger than the sum of its proper divisors (1).

22066744657 is an equidigital number, since it uses as much as digits as its factorization.

22066744657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 22066744657 in words is "twenty-two billion, sixty-six million, seven hundred forty-four thousand, six hundred fifty-seven".