16560216700020 has 192 divisors, whose sum is σ = 61440804311040. Its totient is φ = 3620618787456.

The previous prime is 16560216700003. The next prime is 16560216700021. The reversal of 16560216700020 is 2000761206561.

It is a happy number.

16560216700020 is a `hidden beast` number, since 1 + 6 + 560 + 2 + 1 + 6 + 70 + 0 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16560216700021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95152402 + ... + 95326281.

It is an arithmetic number, because the mean of its divisors is an integer number (320004189120).

Almost surely, 2^{16560216700020} is an apocalyptic number.

16560216700020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16560216700020 is an abundant number, since it is smaller than the sum of its proper divisors (44880587611020).

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

16560216700020 is a wasteful number, since it uses less digits than its factorization.

16560216700020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190478731 (or 190478723 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

Adding to 16560216700020 its reverse (2000761206561), we get a palindrome (18560977906581).

The spelling of 16560216700020 in words is "sixteen trillion, five hundred sixty billion, two hundred sixteen million, seven hundred thousand, twenty".