16715664438 has 64 divisors (see below), whose sum is σ = 37810955520. Its totient is φ = 4879952000.

The previous prime is 16715664419. The next prime is 16715664439. The reversal of 16715664438 is 83446651761.

16715664438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16715664439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 884488 + ... + 903188.

It is an arithmetic number, because the mean of its divisors is an integer number (590796180).

Almost surely, 2^16715664438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16715664438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18905477760).

16715664438 is an abundant number, since it is smaller than the sum of its proper divisors (21095291082).

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

16715664438 is a wasteful number, since it uses less digits than its factorization.

16715664438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19213.

The product of its digits is 2903040, while the sum is 51.

The spelling of 16715664438 in words is "sixteen billion, seven hundred fifteen million, six hundred sixty-four thousand, four hundred thirty-eight".