10204056565009 has 2 divisors, whose sum is σ = 10204056565010. Its totient is φ = 10204056565008.

The previous prime is 10204056564929. The next prime is 10204056565033. The reversal of 10204056565009 is 90056565040201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7535864993409 + 2668191571600 = 2745153^2 + 1633460^2 .

It is an emirp because it is prime and its reverse (90056565040201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10204056565009 - 2⁷ = 10204056564881 is a prime.

It is not a weakly prime, because it can be changed into another prime (10204056565309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5102028282504 + 5102028282505.

It is an arithmetic number, because the mean of its divisors is an integer number (5102028282505).

Almost surely, 2^{10204056565009} is an apocalyptic number.

It is an amenable number.

10204056565009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10204056565009 is an equidigital number, since it uses as much as digits as its factorization.

10204056565009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 10204056565009 in words is "ten trillion, two hundred four billion, fifty-six million, five hundred sixty-five thousand, nine".