204444864073 has 2 divisors, whose sum is σ = 204444864074. Its totient is φ = 204444864072.

The previous prime is 204444864053. The next prime is 204444864083. The reversal of 204444864073 is 370468444402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204017532489 + 427331584 = 451683^2 + 20672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204444864073 is a prime.

It is a super-2 number, since 2×204444864073² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204444864053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102222432036 + 102222432037.

It is an arithmetic number, because the mean of its divisors is an integer number (102222432037).

Almost surely, 2^204444864073 is an apocalyptic number.

It is an amenable number.

204444864073 is a deficient number, since it is larger than the sum of its proper divisors (1).

204444864073 is an equidigital number, since it uses as much as digits as its factorization.

204444864073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 46.

The spelling of 204444864073 in words is "two hundred four billion, four hundred forty-four million, eight hundred sixty-four thousand, seventy-three".