318788232609793 has 2 divisors, whose sum is σ = 318788232609794. Its totient is φ = 318788232609792.

The previous prime is 318788232609773. The next prime is 318788232609797. The reversal of 318788232609793 is 397906232887813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231037932804624 + 87750299805169 = 15199932^2 + 9367513^2 .

It is a cyclic number.

It is not a de Polignac number, because 318788232609793 - 2²⁹ = 318787695738881 is a prime.

It is not a weakly prime, because it can be changed into another prime (318788232609797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159394116304896 + 159394116304897.

It is an arithmetic number, because the mean of its divisors is an integer number (159394116304897).

Almost surely, 2^{318788232609793} is an apocalyptic number.

It is an amenable number.

318788232609793 is a deficient number, since it is larger than the sum of its proper divisors (1).

318788232609793 is an equidigital number, since it uses as much as digits as its factorization.

318788232609793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1316818944, while the sum is 76.

The spelling of 318788232609793 in words is "three hundred eighteen trillion, seven hundred eighty-eight billion, two hundred thirty-two million, six hundred nine thousand, seven hundred ninety-three".