318678543097 has 2 divisors, whose sum is σ = 318678543098. Its totient is φ = 318678543096.

The previous prime is 318678543017. The next prime is 318678543107. The reversal of 318678543097 is 790345876813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183615678016 + 135062865081 = 428504^2 + 367509^2 .

It is a cyclic number.

It is not a de Polignac number, because 318678543097 - 2³⁵ = 284318804729 is a prime.

It is not a weakly prime, because it can be changed into another prime (318678543017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159339271548 + 159339271549.

It is an arithmetic number, because the mean of its divisors is an integer number (159339271549).

Almost surely, 2^318678543097 is an apocalyptic number.

It is an amenable number.

318678543097 is a deficient number, since it is larger than the sum of its proper divisors (1).

318678543097 is an equidigital number, since it uses as much as digits as its factorization.

318678543097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 318678543097 in words is "three hundred eighteen billion, six hundred seventy-eight million, five hundred forty-three thousand, ninety-seven".