204044087475869 has 2 divisors, whose sum is σ = 204044087475870. Its totient is φ = 204044087475868.

The previous prime is 204044087475859. The next prime is 204044087475881. The reversal of 204044087475869 is 968574780440402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198667277223844 + 5376810252025 = 14094938^2 + 2318795^2 .

It is a cyclic number.

It is not a de Polignac number, because 204044087475869 - 2²⁴ = 204044070698653 is a prime.

It is a super-2 number, since 2×204044087475869² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204044087475799 and 204044087475808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204044087475859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102022043737934 + 102022043737935.

It is an arithmetic number, because the mean of its divisors is an integer number (102022043737935).

Almost surely, 2^{204044087475869} is an apocalyptic number.

It is an amenable number.

204044087475869 is a deficient number, since it is larger than the sum of its proper divisors (1).

204044087475869 is an equidigital number, since it uses as much as digits as its factorization.

204044087475869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 433520640, while the sum is 68.

The spelling of 204044087475869 in words is "two hundred four trillion, forty-four billion, eighty-seven million, four hundred seventy-five thousand, eight hundred sixty-nine".