16220669249 has 2 divisors, whose sum is σ = 16220669250. Its totient is φ = 16220669248.

The previous prime is 16220669203. The next prime is 16220669263. The reversal of 16220669249 is 94296602261.

16220669249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16025787649 + 194881600 = 126593^2 + 13960^2 .

It is a cyclic number.

It is not a de Polignac number, because 16220669249 - 2¹⁶ = 16220603713 is a prime.

It is a super-2 number, since 2×16220669249² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16220669449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8110334624 + 8110334625.

It is an arithmetic number, because the mean of its divisors is an integer number (8110334625).

Almost surely, 2^16220669249 is an apocalyptic number.

It is an amenable number.

16220669249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16220669249 is an equidigital number, since it uses as much as digits as its factorization.

16220669249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 16220669249 in words is "sixteen billion, two hundred twenty million, six hundred sixty-nine thousand, two hundred forty-nine".