16443843426 has 32 divisors (see below), whose sum is σ = 36559617600. Its totient is φ = 5478619680.

The previous prime is 16443843371. The next prime is 16443843457. The reversal of 16443843426 is 62434834461.

16443843426 is a `hidden beast` number, since 164 + 4 + 38 + 434 + 26 = 666.

It is a super-3 number, since 3×16443843426³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39921 + ... + 185691.

It is an arithmetic number, because the mean of its divisors is an integer number (1142488050).

Almost surely, 2^16443843426 is an apocalyptic number.

16443843426 is an abundant number, since it is smaller than the sum of its proper divisors (20115774174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16443843426 is a wasteful number, since it uses less digits than its factorization.

16443843426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147871 (or 147865 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 45.

The spelling of 16443843426 in words is "sixteen billion, four hundred forty-three million, eight hundred forty-three thousand, four hundred twenty-six".