16716451640 has 128 divisors (see below), whose sum is σ = 43507031040. Its totient is φ = 5662089216.

The previous prime is 16716451603. The next prime is 16716451649. The reversal of 16716451640 is 4615461761.

16716451640 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 (16716451649) 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, 17286437 + ... + 17287403.

It is an arithmetic number, because the mean of its divisors is an integer number (339898680).

Almost surely, 2^16716451640 is an apocalyptic number.

16716451640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16716451640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21753515520).

16716451640 is an abundant number, since it is smaller than the sum of its proper divisors (26790579400).

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

16716451640 is a wasteful number, since it uses less digits than its factorization.

16716451640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1665 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 16716451640 in words is "sixteen billion, seven hundred sixteen million, four hundred fifty-one thousand, six hundred forty".