205851264127 has 2 divisors, whose sum is σ = 205851264128. Its totient is φ = 205851264126.

The previous prime is 205851264089. The next prime is 205851264167. The reversal of 205851264127 is 721462158502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205851264127 - 2⁷ = 205851263999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205851264167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102925632063 + 102925632064.

It is an arithmetic number, because the mean of its divisors is an integer number (102925632064).

Almost surely, 2^205851264127 is an apocalyptic number.

205851264127 is a deficient number, since it is larger than the sum of its proper divisors (1).

205851264127 is an equidigital number, since it uses as much as digits as its factorization.

205851264127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 205851264127 in words is "two hundred five billion, eight hundred fifty-one million, two hundred sixty-four thousand, one hundred twenty-seven".