16568640396000 has 1920 divisors, whose sum is σ = 76015484633088. Its totient is φ = 3433881600000.

The previous prime is 16568640395987. The next prime is 16568640396019. The reversal of 16568640396000 is 69304686561.

16568640396000 is a `hidden beast` number, since 1 + 6 + 568 + 6 + 40 + 39 + 6 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 14394995425 + ... + 14394996575.

Almost surely, 2^{16568640396000} is an apocalyptic number.

16568640396000 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 16568640396000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38007742316544).

16568640396000 is an abundant number, since it is smaller than the sum of its proper divisors (59446844237088).

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

16568640396000 is a wasteful number, since it uses less digits than its factorization.

16568640396000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 16568640396000 in words is "sixteen trillion, five hundred sixty-eight billion, six hundred forty million, three hundred ninety-six thousand".