318661133069 has 2 divisors, whose sum is σ = 318661133070. Its totient is φ = 318661133068.

The previous prime is 318661133003. The next prime is 318661133099. The reversal of 318661133069 is 960331166813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245416206025 + 73244927044 = 495395^2 + 270638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318661133069 is a prime.

It is a super-2 number, since 2×318661133069² (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 (318661133099) 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, 159330566534 + 159330566535.

It is an arithmetic number, because the mean of its divisors is an integer number (159330566535).

Almost surely, 2^318661133069 is an apocalyptic number.

It is an amenable number.

318661133069 is a deficient number, since it is larger than the sum of its proper divisors (1).

318661133069 is an equidigital number, since it uses as much as digits as its factorization.

318661133069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 318661133069 in words is "three hundred eighteen billion, six hundred sixty-one million, one hundred thirty-three thousand, sixty-nine".