509333540557 has 2 divisors, whose sum is σ = 509333540558. Its totient is φ = 509333540556.

The previous prime is 509333540549. The next prime is 509333540633. The reversal of 509333540557 is 755045333905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399355746916 + 109977793641 = 631946^2 + 331629^2 .

It is a cyclic number.

It is not a de Polignac number, because 509333540557 - 2³ = 509333540549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 509333540557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509333544557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254666770278 + 254666770279.

It is an arithmetic number, because the mean of its divisors is an integer number (254666770279).

Almost surely, 2^509333540557 is an apocalyptic number.

It is an amenable number.

509333540557 is a deficient number, since it is larger than the sum of its proper divisors (1).

509333540557 is an equidigital number, since it uses as much as digits as its factorization.

509333540557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4252500, while the sum is 49.

The spelling of 509333540557 in words is "five hundred nine billion, three hundred thirty-three million, five hundred forty thousand, five hundred fifty-seven".