205156904339 has 2 divisors, whose sum is σ = 205156904340. Its totient is φ = 205156904338.

The previous prime is 205156904297. The next prime is 205156904411. The reversal of 205156904339 is 933409651502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205156904339 - 2³⁶ = 136437427603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205156904293 and 205156904302.

It is not a weakly prime, because it can be changed into another prime (205156904839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102578452169 + 102578452170.

It is an arithmetic number, because the mean of its divisors is an integer number (102578452170).

Almost surely, 2^205156904339 is an apocalyptic number.

205156904339 is a deficient number, since it is larger than the sum of its proper divisors (1).

205156904339 is an equidigital number, since it uses as much as digits as its factorization.

205156904339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 874800, while the sum is 47.

The spelling of 205156904339 in words is "two hundred five billion, one hundred fifty-six million, nine hundred four thousand, three hundred thirty-nine".