218773970084713 has 2 divisors, whose sum is σ = 218773970084714. Its totient is φ = 218773970084712.

The previous prime is 218773970084647. The next prime is 218773970084737. The reversal of 218773970084713 is 317480079377812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206669749776169 + 12104220308544 = 14376013^2 + 3479112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218773970084713 is a prime.

It is not a weakly prime, because it can be changed into another prime (218773910084713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109386985042356 + 109386985042357.

It is an arithmetic number, because the mean of its divisors is an integer number (109386985042357).

Almost surely, 2^{218773970084713} is an apocalyptic number.

It is an amenable number.

218773970084713 is a deficient number, since it is larger than the sum of its proper divisors (1).

218773970084713 is an equidigital number, since it uses as much as digits as its factorization.

218773970084713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 99574272, while the sum is 67.

The spelling of 218773970084713 in words is "two hundred eighteen trillion, seven hundred seventy-three billion, nine hundred seventy million, eighty-four thousand, seven hundred thirteen".