16439186056 has 8 divisors (see below), whose sum is σ = 30823473870. Its totient is φ = 8219593024.

The previous prime is 16439186051. The next prime is 16439186059. The reversal of 16439186056 is 65068193461.

It can be written as a sum of positive squares in only one way, i.e., 10719289156 + 5719896900 = 103534^2 + 75630^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (16439186051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027449121 + ... + 1027449136.

Almost surely, 2^16439186056 is an apocalyptic number.

It is an amenable number.

16439186056 is a deficient number, since it is larger than the sum of its proper divisors (14384287814).

16439186056 is a wasteful number, since it uses less digits than its factorization.

16439186056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054898263 (or 2054898259 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 16439186056 in words is "sixteen billion, four hundred thirty-nine million, one hundred eighty-six thousand, fifty-six".