16560616001 has 4 divisors (see below), whose sum is σ = 16579414404. Its totient is φ = 16541817600.

The previous prime is 16560615971. The next prime is 16560616027. The reversal of 16560616001 is 10061606561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10061606561 = 577 ⋅17437793.

It can be written as a sum of positive squares in 2 ways, for example, as 1263873601 + 15296742400 = 35551^2 + 123680^2 .

It is a cyclic number.

It is not a de Polignac number, because 16560616001 - 2¹⁸ = 16560353857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16560616081) 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, 9397880 + ... + 9399641.

It is an arithmetic number, because the mean of its divisors is an integer number (4144853601).

Almost surely, 2^16560616001 is an apocalyptic number.

It is an amenable number.

16560616001 is a deficient number, since it is larger than the sum of its proper divisors (18798403).

16560616001 is an equidigital number, since it uses as much as digits as its factorization.

16560616001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18798402.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 16560616001 in words is "sixteen billion, five hundred sixty million, six hundred sixteen thousand, one".