509965125847 has 2 divisors, whose sum is σ = 509965125848. Its totient is φ = 509965125846.

The previous prime is 509965125739. The next prime is 509965125851. The reversal of 509965125847 is 748521569905.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 509965125847 - 2¹¹ = 509965123799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509965129847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254982562923 + 254982562924.

It is an arithmetic number, because the mean of its divisors is an integer number (254982562924).

Almost surely, 2^509965125847 is an apocalyptic number.

509965125847 is a deficient number, since it is larger than the sum of its proper divisors (1).

509965125847 is an equidigital number, since it uses as much as digits as its factorization.

509965125847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216000, while the sum is 61.

The spelling of 509965125847 in words is "five hundred nine billion, nine hundred sixty-five million, one hundred twenty-five thousand, eight hundred forty-seven".