260968722065 has 4 divisors (see below), whose sum is σ = 313162466484. Its totient is φ = 208774977648.

The previous prime is 260968722059. The next prime is 260968722067. The reversal of 260968722065 is 560227869062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40771282561 + 220197439504 = 201919^2 + 469252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260968722065 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 260968721998 and 260968722016.

It is not an unprimeable number, because it can be changed into a prime (260968722067) 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, 26096872202 + ... + 26096872211.

It is an arithmetic number, because the mean of its divisors is an integer number (78290616621).

Almost surely, 2^260968722065 is an apocalyptic number.

It is an amenable number.

260968722065 is a deficient number, since it is larger than the sum of its proper divisors (52193744419).

260968722065 is an equidigital number, since it uses as much as digits as its factorization.

260968722065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52193744418.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 260968722065 in words is "two hundred sixty billion, nine hundred sixty-eight million, seven hundred twenty-two thousand, sixty-five".