205145584859 has 2 divisors, whose sum is σ = 205145584860. Its totient is φ = 205145584858.

The previous prime is 205145584829. The next prime is 205145584901. The reversal of 205145584859 is 958485541502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205145584859 - 2⁸ = 205145584603 is a prime.

It is not a weakly prime, because it can be changed into another prime (205145584829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102572792429 + 102572792430.

It is an arithmetic number, because the mean of its divisors is an integer number (102572792430).

Almost surely, 2^205145584859 is an apocalyptic number.

205145584859 is a deficient number, since it is larger than the sum of its proper divisors (1).

205145584859 is an equidigital number, since it uses as much as digits as its factorization.

205145584859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520000, while the sum is 56.

The spelling of 205145584859 in words is "two hundred five billion, one hundred forty-five million, five hundred eighty-four thousand, eight hundred fifty-nine".