16443255568 has 20 divisors (see below), whose sum is σ = 32140747548. Its totient is φ = 8148869120.

The previous prime is 16443255553. The next prime is 16443255571. The reversal of 16443255568 is 86555234461.

It can be written as a sum of positive squares in 2 ways, for example, as 1877662224 + 14565593344 = 43332^2 + 120688^2 .

It is a super-3 number, since 3×16443255568³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545553 + ... + 4549168.

Almost surely, 2^16443255568 is an apocalyptic number.

It is an amenable number.

16443255568 is a deficient number, since it is larger than the sum of its proper divisors (15697491980).

16443255568 is a wasteful number, since it uses less digits than its factorization.

16443255568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9094842 (or 9094836 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 49.

The spelling of 16443255568 in words is "sixteen billion, four hundred forty-three million, two hundred fifty-five thousand, five hundred sixty-eight".