2608261361 has 2 divisors, whose sum is σ = 2608261362. Its totient is φ = 2608261360.

The previous prime is 2608261343. The next prime is 2608261373. The reversal of 2608261361 is 1631628062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2286274225 + 321987136 = 47815^2 + 17944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2608261361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2608261861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1304130680 + 1304130681.

It is an arithmetic number, because the mean of its divisors is an integer number (1304130681).

Almost surely, 2^2608261361 is an apocalyptic number.

It is an amenable number.

2608261361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2608261361 is an equidigital number, since it uses as much as digits as its factorization.

2608261361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2608261361 is about 51071.1401967882. The cubic root of 2608261361 is about 1376.5237298482.

The spelling of 2608261361 in words is "two billion, six hundred eight million, two hundred sixty-one thousand, three hundred sixty-one".