16591638360 has 128 divisors (see below), whose sum is σ = 54397474560. Its totient is φ = 4014988800.

The previous prime is 16591638293. The next prime is 16591638361. The reversal of 16591638360 is 6383619561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16591638361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742714 + ... + 764726.

It is an arithmetic number, because the mean of its divisors is an integer number (424980270).

Almost surely, 2^16591638360 is an apocalyptic number.

16591638360 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 16591638360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27198737280).

16591638360 is an abundant number, since it is smaller than the sum of its proper divisors (37805836200).

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

16591638360 is a wasteful number, since it uses less digits than its factorization.

16591638360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22609 (or 22605 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 16591638360 in words is "sixteen billion, five hundred ninety-one million, six hundred thirty-eight thousand, three hundred sixty".