205156904411 has 2 divisors, whose sum is σ = 205156904412. Its totient is φ = 205156904410.

The previous prime is 205156904339. The next prime is 205156904507. The reversal of 205156904411 is 114409651502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205156904411 - 2¹⁸ = 205156642267 is a prime.

It is not a weakly prime, because it can be changed into another prime (205156904611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102578452205 + 102578452206.

It is an arithmetic number, because the mean of its divisors is an integer number (102578452206).

Almost surely, 2^205156904411 is an apocalyptic number.

205156904411 is a deficient number, since it is larger than the sum of its proper divisors (1).

205156904411 is an equidigital number, since it uses as much as digits as its factorization.

205156904411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 205156904411 in words is "two hundred five billion, one hundred fifty-six million, nine hundred four thousand, four hundred eleven".