218755795829 has 2 divisors, whose sum is σ = 218755795830. Its totient is φ = 218755795828.

The previous prime is 218755795799. The next prime is 218755795901. The reversal of 218755795829 is 928597557812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218747967025 + 7828804 = 467705^2 + 2798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218755795829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218755795229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109377897914 + 109377897915.

It is an arithmetic number, because the mean of its divisors is an integer number (109377897915).

Almost surely, 2^218755795829 is an apocalyptic number.

It is an amenable number.

218755795829 is a deficient number, since it is larger than the sum of its proper divisors (1).

218755795829 is an equidigital number, since it uses as much as digits as its factorization.

218755795829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008000, while the sum is 68.

The spelling of 218755795829 in words is "two hundred eighteen billion, seven hundred fifty-five million, seven hundred ninety-five thousand, eight hundred twenty-nine".