16443338636 has 12 divisors (see below), whose sum is σ = 28778136912. Its totient is φ = 8221013808.

The previous prime is 16443338603. The next prime is 16443338693. The reversal of 16443338636 is 63683334461.

It is a super-3 number, since 3×16443338636³ (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 3 ways as a sum of consecutive naturals, for example, 105095 + ... + 209598.

It is an arithmetic number, because the mean of its divisors is an integer number (2398178076).

Almost surely, 2^16443338636 is an apocalyptic number.

It is an amenable number.

16443338636 is a deficient number, since it is larger than the sum of its proper divisors (12334798276).

16443338636 is a wasteful number, since it uses less digits than its factorization.

16443338636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327760 (or 327758 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 47.

The spelling of 16443338636 in words is "sixteen billion, four hundred forty-three million, three hundred thirty-eight thousand, six hundred thirty-six".