318068267861 has 2 divisors, whose sum is σ = 318068267862. Its totient is φ = 318068267860.

The previous prime is 318068267849. The next prime is 318068267879. The reversal of 318068267861 is 168762860813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292214843761 + 25853424100 = 540569^2 + 160790^2 .

It is a cyclic number.

It is not a de Polignac number, because 318068267861 - 2²² = 318064073557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318068267797 and 318068267806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318068257861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159034133930 + 159034133931.

It is an arithmetic number, because the mean of its divisors is an integer number (159034133931).

Almost surely, 2^318068267861 is an apocalyptic number.

It is an amenable number.

318068267861 is a deficient number, since it is larger than the sum of its proper divisors (1).

318068267861 is an equidigital number, since it uses as much as digits as its factorization.

318068267861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The spelling of 318068267861 in words is "three hundred eighteen billion, sixty-eight million, two hundred sixty-seven thousand, eight hundred sixty-one".