1560660610561 has 6 divisors (see below), whose sum is σ = 1689946105110. Its totient is φ = 1440609794208.

The previous prime is 1560660610549. The next prime is 1560660610591. The reversal of 1560660610561 is 1650160660651.

It can be written as a sum of positive squares in 3 ways, for example, as 60574562161 + 1500086048400 = 246119^2 + 1224780^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1560660610561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1560660610591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4617338916 + ... + 4617339253.

It is an arithmetic number, because the mean of its divisors is an integer number (281657684185).

Almost surely, 2^{1560660610561} is an apocalyptic number.

It is an amenable number.

1560660610561 is a deficient number, since it is larger than the sum of its proper divisors (129285494549).

1560660610561 is an equidigital number, since it uses as much as digits as its factorization.

1560660610561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9234678195 (or 9234678182 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1560660610561 in words is "one trillion, five hundred sixty billion, six hundred sixty million, six hundred ten thousand, five hundred sixty-one".