318163716253 has 2 divisors, whose sum is σ = 318163716254. Its totient is φ = 318163716252.

The previous prime is 318163716251. The next prime is 318163716371. The reversal of 318163716253 is 352617361813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305895274084 + 12268442169 = 553078^2 + 110763^2 .

It is a cyclic number.

It is not a de Polignac number, because 318163716253 - 2¹ = 318163716251 is a prime.

Together with 318163716251, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318163716251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159081858126 + 159081858127.

It is an arithmetic number, because the mean of its divisors is an integer number (159081858127).

Almost surely, 2^318163716253 is an apocalyptic number.

It is an amenable number.

318163716253 is a deficient number, since it is larger than the sum of its proper divisors (1).

318163716253 is an equidigital number, since it uses as much as digits as its factorization.

318163716253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The spelling of 318163716253 in words is "three hundred eighteen billion, one hundred sixty-three million, seven hundred sixteen thousand, two hundred fifty-three".