260709512785961 has 2 divisors, whose sum is σ = 260709512785962. Its totient is φ = 260709512785960.

The previous prime is 260709512785903. The next prime is 260709512785979. The reversal of 260709512785961 is 169587215907062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146469755895961 + 114239756890000 = 12102469^2 + 10688300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260709512785961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 260709512785891 and 260709512785900.

It is not a weakly prime, because it can be changed into another prime (260709512787961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130354756392980 + 130354756392981.

It is an arithmetic number, because the mean of its divisors is an integer number (130354756392981).

Almost surely, 2^{260709512785961} is an apocalyptic number.

It is an amenable number.

260709512785961 is a deficient number, since it is larger than the sum of its proper divisors (1).

260709512785961 is an equidigital number, since it uses as much as digits as its factorization.

260709512785961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 114307200, while the sum is 68.

The spelling of 260709512785961 in words is "two hundred sixty trillion, seven hundred nine billion, five hundred twelve million, seven hundred eighty-five thousand, nine hundred sixty-one".