218943076073 has 2 divisors, whose sum is σ = 218943076074. Its totient is φ = 218943076072.

The previous prime is 218943076057. The next prime is 218943076139. The reversal of 218943076073 is 370670349812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147465984169 + 71477091904 = 384013^2 + 267352^2 .

It is a cyclic number.

It is not a de Polignac number, because 218943076073 - 2⁴ = 218943076057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (218943076003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109471538036 + 109471538037.

It is an arithmetic number, because the mean of its divisors is an integer number (109471538037).

Almost surely, 2^218943076073 is an apocalyptic number.

It is an amenable number.

218943076073 is a deficient number, since it is larger than the sum of its proper divisors (1).

218943076073 is an equidigital number, since it uses as much as digits as its factorization.

218943076073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 218943076073 in words is "two hundred eighteen billion, nine hundred forty-three million, seventy-six thousand, seventy-three".