511464640289 has 2 divisors, whose sum is σ = 511464640290. Its totient is φ = 511464640288.

The previous prime is 511464640237. The next prime is 511464640327. The reversal of 511464640289 is 982046464115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368803573264 + 142661067025 = 607292^2 + 377705^2 .

It is a cyclic number.

It is not a de Polignac number, because 511464640289 - 2⁸ = 511464640033 is a prime.

It is not a weakly prime, because it can be changed into another prime (511464640789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255732320144 + 255732320145.

It is an arithmetic number, because the mean of its divisors is an integer number (255732320145).

Almost surely, 2^511464640289 is an apocalyptic number.

It is an amenable number.

511464640289 is a deficient number, since it is larger than the sum of its proper divisors (1).

511464640289 is an equidigital number, since it uses as much as digits as its factorization.

511464640289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 50.

The spelling of 511464640289 in words is "five hundred eleven billion, four hundred sixty-four million, six hundred forty thousand, two hundred eighty-nine".