317780449255 has 4 divisors (see below), whose sum is σ = 381336539112. Its totient is φ = 254224359400.

The previous prime is 317780449253. The next prime is 317780449271. The reversal of 317780449255 is 552944087713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 552944087713 = 419 ⋅1319675627.

It is not a de Polignac number, because 317780449255 - 2¹ = 317780449253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 317780449196 and 317780449205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317780449253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31778044921 + ... + 31778044930.

It is an arithmetic number, because the mean of its divisors is an integer number (95334134778).

Almost surely, 2^317780449255 is an apocalyptic number.

317780449255 is a deficient number, since it is larger than the sum of its proper divisors (63556089857).

317780449255 is an equidigital number, since it uses as much as digits as its factorization.

317780449255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63556089856.

The product of its (nonzero) digits is 8467200, while the sum is 55.

The spelling of 317780449255 in words is "three hundred seventeen billion, seven hundred eighty million, four hundred forty-nine thousand, two hundred fifty-five".