16442244109 has 2 divisors, whose sum is σ = 16442244110. Its totient is φ = 16442244108.

The previous prime is 16442244089. The next prime is 16442244139. The reversal of 16442244109 is 90144224461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13583203209 + 2859040900 = 116547^2 + 53470^2 .

It is a cyclic number.

It is not a de Polignac number, because 16442244109 - 2³¹ = 14294760461 is a prime.

It is a super-3 number, since 3×16442244109³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16442244139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8221122054 + 8221122055.

It is an arithmetic number, because the mean of its divisors is an integer number (8221122055).

Almost surely, 2^16442244109 is an apocalyptic number.

It is an amenable number.

16442244109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16442244109 is an equidigital number, since it uses as much as digits as its factorization.

16442244109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 16442244109 in words is "sixteen billion, four hundred forty-two million, two hundred forty-four thousand, one hundred nine".