23634563634217 has 2 divisors, whose sum is σ = 23634563634218. Its totient is φ = 23634563634216.

The previous prime is 23634563634163. The next prime is 23634563634229. The reversal of 23634563634217 is 71243636543632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18200368583721 + 5434195050496 = 4266189^2 + 2331136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23634563634217 is a prime.

It is not a weakly prime, because it can be changed into another prime (23634563634317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11817281817108 + 11817281817109.

It is an arithmetic number, because the mean of its divisors is an integer number (11817281817109).

Almost surely, 2^{23634563634217} is an apocalyptic number.

It is an amenable number.

23634563634217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23634563634217 is an equidigital number, since it uses as much as digits as its factorization.

23634563634217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39191040, while the sum is 55.

The spelling of 23634563634217 in words is "twenty-three trillion, six hundred thirty-four billion, five hundred sixty-three million, six hundred thirty-four thousand, two hundred seventeen".