16444468819 has 2 divisors, whose sum is σ = 16444468820. Its totient is φ = 16444468818.

The previous prime is 16444468759. The next prime is 16444468853. The reversal of 16444468819 is 91886444461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16444468819 - 2¹¹ = 16444466771 is a prime.

It is a super-2 number, since 2×16444468819² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16444468819.

It is not a weakly prime, because it can be changed into another prime (16444468319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8222234409 + 8222234410.

It is an arithmetic number, because the mean of its divisors is an integer number (8222234410).

Almost surely, 2^16444468819 is an apocalyptic number.

16444468819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16444468819 is an equidigital number, since it uses as much as digits as its factorization.

16444468819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5308416, while the sum is 55.

The spelling of 16444468819 in words is "sixteen billion, four hundred forty-four million, four hundred sixty-eight thousand, eight hundred nineteen".