10265209817 has 2 divisors, whose sum is σ = 10265209818. Its totient is φ = 10265209816.

The previous prime is 10265209789. The next prime is 10265209853. The reversal of 10265209817 is 71890256201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5571726736 + 4693483081 = 74644^2 + 68509^2 .

It is a cyclic number.

It is not a de Polignac number, because 10265209817 - 2²⁰ = 10264161241 is a prime.

It is not a weakly prime, because it can be changed into another prime (10265259817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5132604908 + 5132604909.

It is an arithmetic number, because the mean of its divisors is an integer number (5132604909).

Almost surely, 2^10265209817 is an apocalyptic number.

It is an amenable number.

10265209817 is a deficient number, since it is larger than the sum of its proper divisors (1).

10265209817 is an equidigital number, since it uses as much as digits as its factorization.

10265209817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 10265209817 in words is "ten billion, two hundred sixty-five million, two hundred nine thousand, eight hundred seventeen".