16443346643 has 8 divisors (see below), whose sum is σ = 17315377920. Its totient is φ = 15571974600.

The previous prime is 16443346631. The next prime is 16443346651. The reversal of 16443346643 is 34664334461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16443346643 - 2⁴ = 16443346627 is a prime.

It is a super-3 number, since 3×16443346643³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16443346594 and 16443346603.

It is not an unprimeable number, because it can be changed into a prime (16443346693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113183 + ... + 213768.

It is an arithmetic number, because the mean of its divisors is an integer number (2164422240).

Almost surely, 2^16443346643 is an apocalyptic number.

16443346643 is a deficient number, since it is larger than the sum of its proper divisors (872031277).

16443346643 is a wasteful number, since it uses less digits than its factorization.

16443346643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329617.

The product of its digits is 1492992, while the sum is 44.

The spelling of 16443346643 in words is "sixteen billion, four hundred forty-three million, three hundred forty-six thousand, six hundred forty-three".