16595057664 has 264 divisors, whose sum is σ = 50455733328. Its totient is φ = 5246484480.

The previous prime is 16595057593. The next prime is 16595057707. The reversal of 16595057664 is 46675059561.

16595057664 is a `hidden beast` number, since 1 + 6 + 5 + 9 + 5 + 0 + 576 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16595057664.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13980079 + ... + 13981265.

It is an arithmetic number, because the mean of its divisors is an integer number (191120202).

Almost surely, 2^16595057664 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 16595057664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25227866664).

16595057664 is an abundant number, since it is smaller than the sum of its proper divisors (33860675664).

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

16595057664 is a wasteful number, since it uses less digits than its factorization.

16595057664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 16595057664 in words is "sixteen billion, five hundred ninety-five million, fifty-seven thousand, six hundred sixty-four".