16443503361 has 16 divisors (see below), whose sum is σ = 24584243200. Its totient is φ = 10861761744.

The previous prime is 16443503347. The next prime is 16443503371. The reversal of 16443503361 is 16330534461.

16443503361 is a `hidden beast` number, since 1 + 644 + 3 + 5 + 0 + 3 + 3 + 6 + 1 = 666.

16443503361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16443503361 - 2⁷ = 16443503233 is a prime.

It is a super-3 number, since 3×16443503361³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16443503371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790721 + ... + 2796606.

It is an arithmetic number, because the mean of its divisors is an integer number (1536515200).

Almost surely, 2^16443503361 is an apocalyptic number.

It is an amenable number.

16443503361 is a deficient number, since it is larger than the sum of its proper divisors (8140739839).

16443503361 is a wasteful number, since it uses less digits than its factorization.

16443503361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5587445 (or 5587439 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 16443503361 in words is "sixteen billion, four hundred forty-three million, five hundred three thousand, three hundred sixty-one".