509868288647 has 2 divisors, whose sum is σ = 509868288648. Its totient is φ = 509868288646.

The previous prime is 509868288599. The next prime is 509868288701. The reversal of 509868288647 is 746882868905.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 509868288647 - 2³⁶ = 441148811911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509868288047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254934144323 + 254934144324.

It is an arithmetic number, because the mean of its divisors is an integer number (254934144324).

Almost surely, 2^509868288647 is an apocalyptic number.

509868288647 is a deficient number, since it is larger than the sum of its proper divisors (1).

509868288647 is an equidigital number, since it uses as much as digits as its factorization.

509868288647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 371589120, while the sum is 71.

The spelling of 509868288647 in words is "five hundred nine billion, eight hundred sixty-eight million, two hundred eighty-eight thousand, six hundred forty-seven".