494978246753 has 4 divisors (see below), whose sum is σ = 494980046340. Its totient is φ = 494976447168.

The previous prime is 494978246743. The next prime is 494978246779. The reversal of 494978246753 is 357642879494.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347854603264 + 147123643489 = 589792^2 + 383567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494978246753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (494978246743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391508 + ... + 1069221.

It is an arithmetic number, because the mean of its divisors is an integer number (123745011585).

Almost surely, 2^494978246753 is an apocalyptic number.

It is an amenable number.

494978246753 is a deficient number, since it is larger than the sum of its proper divisors (1799587).

494978246753 is a wasteful number, since it uses less digits than its factorization.

494978246753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799586.

The product of its digits is 365783040, while the sum is 68.

The spelling of 494978246753 in words is "four hundred ninety-four billion, nine hundred seventy-eight million, two hundred forty-six thousand, seven hundred fifty-three".