167218218313 has 2 divisors, whose sum is σ = 167218218314. Its totient is φ = 167218218312.

The previous prime is 167218218259. The next prime is 167218218347. The reversal of 167218218313 is 313812812761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155135152384 + 12083065929 = 393872^2 + 109923^2 .

It is a cyclic number.

It is not a de Polignac number, because 167218218313 - 2¹³ = 167218210121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 167218218313.

It is not a weakly prime, because it can be changed into another prime (167218218113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83609109156 + 83609109157.

It is an arithmetic number, because the mean of its divisors is an integer number (83609109157).

Almost surely, 2^167218218313 is an apocalyptic number.

It is an amenable number.

167218218313 is a deficient number, since it is larger than the sum of its proper divisors (1).

167218218313 is an equidigital number, since it uses as much as digits as its factorization.

167218218313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The spelling of 167218218313 in words is "one hundred sixty-seven billion, two hundred eighteen million, two hundred eighteen thousand, three hundred thirteen".