22566266501 has 2 divisors, whose sum is σ = 22566266502. Its totient is φ = 22566266500.

The previous prime is 22566266473. The next prime is 22566266549. The reversal of 22566266501 is 10566266522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17305665601 + 5260600900 = 131551^2 + 72530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22566266501 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22566266101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11283133250 + 11283133251.

It is an arithmetic number, because the mean of its divisors is an integer number (11283133251).

Almost surely, 2^22566266501 is an apocalyptic number.

It is an amenable number.

22566266501 is a deficient number, since it is larger than the sum of its proper divisors (1).

22566266501 is an equidigital number, since it uses as much as digits as its factorization.

22566266501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 22566266501 in words is "twenty-two billion, five hundred sixty-six million, two hundred sixty-six thousand, five hundred one".