16563772340263 has 2 divisors, whose sum is σ = 16563772340264. Its totient is φ = 16563772340262.

The previous prime is 16563772340249. The next prime is 16563772340281. The reversal of 16563772340263 is 36204327736561.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16563772340263 is a prime.

It is a super-3 number, since 3×16563772340263³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16563772344263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8281886170131 + 8281886170132.

It is an arithmetic number, because the mean of its divisors is an integer number (8281886170132).

Almost surely, 2^{16563772340263} is an apocalyptic number.

16563772340263 is a deficient number, since it is larger than the sum of its proper divisors (1).

16563772340263 is an equidigital number, since it uses as much as digits as its factorization.

16563772340263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 55.

The spelling of 16563772340263 in words is "sixteen trillion, five hundred sixty-three billion, seven hundred seventy-two million, three hundred forty thousand, two hundred sixty-three".