16443345851 has 2 divisors, whose sum is σ = 16443345852. Its totient is φ = 16443345850.

The previous prime is 16443345847. The next prime is 16443345887. The reversal of 16443345851 is 15854334461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16443345851 - 2² = 16443345847 is a prime.

It is a super-3 number, since 3×16443345851³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16443645851) 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, 8221672925 + 8221672926.

It is an arithmetic number, because the mean of its divisors is an integer number (8221672926).

Almost surely, 2^16443345851 is an apocalyptic number.

16443345851 is a deficient number, since it is larger than the sum of its proper divisors (1).

16443345851 is an equidigital number, since it uses as much as digits as its factorization.

16443345851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691200, while the sum is 44.

The spelling of 16443345851 in words is "sixteen billion, four hundred forty-three million, three hundred forty-five thousand, eight hundred fifty-one".