260365613621 has 2 divisors, whose sum is σ = 260365613622. Its totient is φ = 260365613620.

The previous prime is 260365613597. The next prime is 260365613623. The reversal of 260365613621 is 126316563062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241632216721 + 18733396900 = 491561^2 + 136870^2 .

It is a cyclic number.

It is not a de Polignac number, because 260365613621 - 2¹⁰ = 260365612597 is a prime.

Together with 260365613623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260365613623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130182806810 + 130182806811.

It is an arithmetic number, because the mean of its divisors is an integer number (130182806811).

Almost surely, 2^260365613621 is an apocalyptic number.

It is an amenable number.

260365613621 is a deficient number, since it is larger than the sum of its proper divisors (1).

260365613621 is an equidigital number, since it uses as much as digits as its factorization.

260365613621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 260365613621 in words is "two hundred sixty billion, three hundred sixty-five million, six hundred thirteen thousand, six hundred twenty-one".