14563561217 has 2 divisors, whose sum is σ = 14563561218. Its totient is φ = 14563561216.

The previous prime is 14563561147. The next prime is 14563561261. The reversal of 14563561217 is 71216536541.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11726507521 + 2837053696 = 108289^2 + 53264^2 .

It is a cyclic number.

It is not a de Polignac number, because 14563561217 - 2¹⁴ = 14563544833 is a prime.

It is not a weakly prime, because it can be changed into another prime (14563581217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7281780608 + 7281780609.

It is an arithmetic number, because the mean of its divisors is an integer number (7281780609).

Almost surely, 2^14563561217 is an apocalyptic number.

It is an amenable number.

14563561217 is a deficient number, since it is larger than the sum of its proper divisors (1).

14563561217 is an equidigital number, since it uses as much as digits as its factorization.

14563561217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The spelling of 14563561217 in words is "fourteen billion, five hundred sixty-three million, five hundred sixty-one thousand, two hundred seventeen".