218496074009 has 2 divisors, whose sum is σ = 218496074010. Its totient is φ = 218496074008.

The previous prime is 218496073997. The next prime is 218496074047. The reversal of 218496074009 is 900470694812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139550809225 + 78945264784 = 373565^2 + 280972^2 .

It is a cyclic number.

It is not a de Polignac number, because 218496074009 - 2⁴ = 218496073993 is a prime.

It is not a weakly prime, because it can be changed into another prime (218496674009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109248037004 + 109248037005.

It is an arithmetic number, because the mean of its divisors is an integer number (109248037005).

Almost surely, 2^218496074009 is an apocalyptic number.

It is an amenable number.

218496074009 is a deficient number, since it is larger than the sum of its proper divisors (1).

218496074009 is an equidigital number, since it uses as much as digits as its factorization.

218496074009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 218496074009 in words is "two hundred eighteen billion, four hundred ninety-six million, seventy-four thousand, nine".