317472211778 has 6 divisors (see below), whose sum is σ = 476209512921. Its totient is φ = 158735707472.

The previous prime is 317472211769. The next prime is 317472211811. The reversal of 317472211778 is 877112274713.

It can be written as a sum of positive squares in 2 ways, for example, as 174805101409 + 142667110369 = 418097^2 + 377713^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=398417.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 597626 + ... + 996042.

Almost surely, 2^317472211778 is an apocalyptic number.

317472211778 is a deficient number, since it is larger than the sum of its proper divisors (158737301143).

317472211778 is an frugal number, since it uses more digits than its factorization.

317472211778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796836 (or 398419 counting only the distinct ones).

The product of its digits is 921984, while the sum is 50.

Multiplying 317472211778 by its sum of digits (50), we get a square (15873610588900 = 3984170²).

The spelling of 317472211778 in words is "three hundred seventeen billion, four hundred seventy-two million, two hundred eleven thousand, seven hundred seventy-eight".