6560928767761 has 3 divisors (see below), whose sum is σ = 6560931329193. Its totient is φ = 6560926206330.

The previous prime is 6560928767759. The next prime is 6560928767803. The reversal of 6560928767761 is 1677678290656.

The square root of 6560928767761 is 2561431.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6560928767761 - 2¹ = 6560928767759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6560928767461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1280716 + ... + 3842146.

It is an arithmetic number, because the mean of its divisors is an integer number (2186977109731).

Almost surely, 2^{6560928767761} is an apocalyptic number.

6560928767761 is the 2561431-st square number.

6560928767761 is the 1280716-th centered octagonal number.

It is an amenable number.

6560928767761 is a deficient number, since it is larger than the sum of its proper divisors (2561432).

6560928767761 is an frugal number, since it uses more digits than its factorization.

6560928767761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5122862 (or 2561431 counting only the distinct ones).

The product of its (nonzero) digits is 320060160, while the sum is 70.

The spelling of 6560928767761 in words is "six trillion, five hundred sixty billion, nine hundred twenty-eight million, seven hundred sixty-seven thousand, seven hundred sixty-one".