16220505563 has 2 divisors, whose sum is σ = 16220505564. Its totient is φ = 16220505562.

The previous prime is 16220505551. The next prime is 16220505571. The reversal of 16220505563 is 36550502261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16220505563 - 2¹⁰ = 16220504539 is a prime.

It is not a weakly prime, because it can be changed into another prime (16220505863) 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, 8110252781 + 8110252782.

It is an arithmetic number, because the mean of its divisors is an integer number (8110252782).

Almost surely, 2^16220505563 is an apocalyptic number.

16220505563 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220505563 is an equidigital number, since it uses as much as digits as its factorization.

16220505563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54000, while the sum is 35.

The spelling of 16220505563 in words is "sixteen billion, two hundred twenty million, five hundred five thousand, five hundred sixty-three".