16560767820 has 48 divisors (see below), whose sum is σ = 47156094720. Its totient is φ = 4341352896.

The previous prime is 16560767819. The next prime is 16560767831. The reversal of 16560767820 is 2876706561.

16560767820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 16560767820.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2335552 + ... + 2342631.

It is an arithmetic number, because the mean of its divisors is an integer number (982418640).

Almost surely, 2^16560767820 is an apocalyptic number.

16560767820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16560767820 is an abundant number, since it is smaller than the sum of its proper divisors (30595326900).

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

16560767820 is a wasteful number, since it uses less digits than its factorization.

16560767820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4678254 (or 4678252 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 16560767820 in words is "sixteen billion, five hundred sixty million, seven hundred sixty-seven thousand, eight hundred twenty".