319998746497 has 2 divisors, whose sum is σ = 319998746498. Its totient is φ = 319998746496.

The previous prime is 319998746467. The next prime is 319998746519. The reversal of 319998746497 is 794647899913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218125427521 + 101873318976 = 467039^2 + 319176^2 .

It is a cyclic number.

It is not a de Polignac number, because 319998746497 - 2¹¹ = 319998744449 is a prime.

It is not a weakly prime, because it can be changed into another prime (319998746467) 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 as a sum of consecutive naturals, namely, 159999373248 + 159999373249.

It is an arithmetic number, because the mean of its divisors is an integer number (159999373249).

Almost surely, 2^319998746497 is an apocalyptic number.

It is an amenable number.

319998746497 is a deficient number, since it is larger than the sum of its proper divisors (1).

319998746497 is an equidigital number, since it uses as much as digits as its factorization.

319998746497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740710656, while the sum is 76.

The spelling of 319998746497 in words is "three hundred nineteen billion, nine hundred ninety-eight million, seven hundred forty-six thousand, four hundred ninety-seven".