494560242509 has 2 divisors, whose sum is σ = 494560242510. Its totient is φ = 494560242508.

The previous prime is 494560242457. The next prime is 494560242511. The reversal of 494560242509 is 905242065494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473890429609 + 20669812900 = 688397^2 + 143770^2 .

It is a cyclic number.

It is not a de Polignac number, because 494560242509 - 2¹² = 494560238413 is a prime.

Together with 494560242511, 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 (494560242409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247280121254 + 247280121255.

It is an arithmetic number, because the mean of its divisors is an integer number (247280121255).

Almost surely, 2^494560242509 is an apocalyptic number.

It is an amenable number.

494560242509 is a deficient number, since it is larger than the sum of its proper divisors (1).

494560242509 is an equidigital number, since it uses as much as digits as its factorization.

494560242509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 494560242509 in words is "four hundred ninety-four billion, five hundred sixty million, two hundred forty-two thousand, five hundred nine".