16338445648 has 80 divisors (see below), whose sum is σ = 38475176320. Its totient is φ = 6565183488.

The previous prime is 16338445601. The next prime is 16338445661. The reversal of 16338445648 is 84654483361.

It is a junction number, because it is equal to n+sod(n) for n = 16338445595 and 16338445604.

It is a congruent number.

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, 166840 + ... + 245992.

It is an arithmetic number, because the mean of its divisors is an integer number (480939704).

Almost surely, 2^16338445648 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 16338445648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19237588160).

16338445648 is an abundant number, since it is smaller than the sum of its proper divisors (22136730672).

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

16338445648 is a wasteful number, since it uses less digits than its factorization.

16338445648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79284 (or 79278 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 52.

The spelling of 16338445648 in words is "sixteen billion, three hundred thirty-eight million, four hundred forty-five thousand, six hundred forty-eight".