16443422424145 has 4 divisors (see below), whose sum is σ = 19732106908980. Its totient is φ = 13154737939312.

The previous prime is 16443422424109. The next prime is 16443422424173. The reversal of 16443422424145 is 54142422434461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8892968123664 + 7550454300481 = 2982108^2 + 2747809^2 .

It is a cyclic number.

It is not a de Polignac number, because 16443422424145 - 2²⁷ = 16443288206417 is a prime.

It is a super-3 number, since 3×16443422424145³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 16443422424095 and 16443422424104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644342242410 + ... + 1644342242419.

It is an arithmetic number, because the mean of its divisors is an integer number (4933026727245).

Almost surely, 2^{16443422424145} is an apocalyptic number.

It is an amenable number.

16443422424145 is a deficient number, since it is larger than the sum of its proper divisors (3288684484835).

16443422424145 is an equidigital number, since it uses as much as digits as its factorization.

16443422424145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288684484834.

The product of its digits is 2949120, while the sum is 46.

The spelling of 16443422424145 in words is "sixteen trillion, four hundred forty-three billion, four hundred twenty-two million, four hundred twenty-four thousand, one hundred forty-five".