318727660109 has 2 divisors, whose sum is σ = 318727660110. Its totient is φ = 318727660108.

The previous prime is 318727660103. The next prime is 318727660157. The reversal of 318727660109 is 901066727813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165002502025 + 153725158084 = 406205^2 + 392078^2 .

It is a cyclic number.

It is not a de Polignac number, because 318727660109 - 2⁴ = 318727660093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318727660103) 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, 159363830054 + 159363830055.

It is an arithmetic number, because the mean of its divisors is an integer number (159363830055).

Almost surely, 2^318727660109 is an apocalyptic number.

It is an amenable number.

318727660109 is a deficient number, since it is larger than the sum of its proper divisors (1).

318727660109 is an equidigital number, since it uses as much as digits as its factorization.

318727660109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 318727660109 in words is "three hundred eighteen billion, seven hundred twenty-seven million, six hundred sixty thousand, one hundred nine".