16339439648 has 72 divisors (see below), whose sum is σ = 37659147372. Its totient is φ = 6957909504.

The previous prime is 16339439647. The next prime is 16339439659. The reversal of 16339439648 is 84693493361.

It can be written as a sum of positive squares in 2 ways, for example, as 15588021904 + 751417744 = 124852^2 + 27412^2 .

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 16339439593 and 16339439602.

It is not an unprimeable number, because it can be changed into a prime (16339439647) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 212990 + ... + 279362.

Almost surely, 2^16339439648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16339439648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18829573686).

16339439648 is an abundant number, since it is smaller than the sum of its proper divisors (21319707724).

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

16339439648 is a wasteful number, since it uses less digits than its factorization.

16339439648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66554 (or 66539 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 56.

The spelling of 16339439648 in words is "sixteen billion, three hundred thirty-nine million, four hundred thirty-nine thousand, six hundred forty-eight".