16560779473 has 4 divisors (see below), whose sum is σ = 18926605120. Its totient is φ = 14194953828.

The previous prime is 16560779441. The next prime is 16560779497. The reversal of 16560779473 is 37497706561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16560779473 - 2⁵ = 16560779441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16560776473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182912813 + ... + 1182912826.

It is an arithmetic number, because the mean of its divisors is an integer number (4731651280).

Almost surely, 2^16560779473 is an apocalyptic number.

It is an amenable number.

16560779473 is a deficient number, since it is larger than the sum of its proper divisors (2365825647).

16560779473 is an equidigital number, since it uses as much as digits as its factorization.

16560779473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365825646.

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 16560779473 in words is "sixteen billion, five hundred sixty million, seven hundred seventy-nine thousand, four hundred seventy-three".