260644130189 has 2 divisors, whose sum is σ = 260644130190. Its totient is φ = 260644130188.

The previous prime is 260644130179. The next prime is 260644130209. The reversal of 260644130189 is 981031446062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251359844164 + 9284286025 = 501358^2 + 96355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260644130189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260644130119) 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, 130322065094 + 130322065095.

It is an arithmetic number, because the mean of its divisors is an integer number (130322065095).

Almost surely, 2^260644130189 is an apocalyptic number.

It is an amenable number.

260644130189 is a deficient number, since it is larger than the sum of its proper divisors (1).

260644130189 is an equidigital number, since it uses as much as digits as its factorization.

260644130189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 260644130189 in words is "two hundred sixty billion, six hundred forty-four million, one hundred thirty thousand, one hundred eighty-nine".