318215727679 has 2 divisors, whose sum is σ = 318215727680. Its totient is φ = 318215727678.

The previous prime is 318215727589. The next prime is 318215727719. The reversal of 318215727679 is 976727512813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318215727679 - 2³⁷ = 180776774207 is a prime.

It is a super-2 number, since 2×318215727679² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318215767679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159107863839 + 159107863840.

It is an arithmetic number, because the mean of its divisors is an integer number (159107863840).

Almost surely, 2^318215727679 is an apocalyptic number.

318215727679 is a deficient number, since it is larger than the sum of its proper divisors (1).

318215727679 is an equidigital number, since it uses as much as digits as its factorization.

318215727679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 58.

The spelling of 318215727679 in words is "three hundred eighteen billion, two hundred fifteen million, seven hundred twenty-seven thousand, six hundred seventy-nine".