6560242279681 has 2 divisors, whose sum is σ = 6560242279682. Its totient is φ = 6560242279680.

The previous prime is 6560242279673. The next prime is 6560242279691. The reversal of 6560242279681 is 1869722420656.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6521685030081 + 38557249600 = 2553759^2 + 196360^2 .

It is a cyclic number.

It is not a de Polignac number, because 6560242279681 - 2³ = 6560242279673 is a prime.

It is a super-2 number, since 2×6560242279681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6560242279601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280121139840 + 3280121139841.

It is an arithmetic number, because the mean of its divisors is an integer number (3280121139841).

Almost surely, 2^{6560242279681} is an apocalyptic number.

It is an amenable number.

6560242279681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6560242279681 is an equidigital number, since it uses as much as digits as its factorization.

6560242279681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 6560242279681 in words is "six trillion, five hundred sixty billion, two hundred forty-two million, two hundred seventy-nine thousand, six hundred eighty-one".