499564497569 has 2 divisors, whose sum is σ = 499564497570. Its totient is φ = 499564497568.

The previous prime is 499564497533. The next prime is 499564497617. The reversal of 499564497569 is 965794465994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257239667344 + 242324830225 = 507188^2 + 492265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499564497569 is a prime.

It is a super-2 number, since 2×499564497569² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 499564497569.

It is not a weakly prime, because it can be changed into another prime (499564497269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249782248784 + 249782248785.

It is an arithmetic number, because the mean of its divisors is an integer number (249782248785).

Almost surely, 2^499564497569 is an apocalyptic number.

It is an amenable number.

499564497569 is a deficient number, since it is larger than the sum of its proper divisors (1).

499564497569 is an equidigital number, since it uses as much as digits as its factorization.

499564497569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2645395200, while the sum is 77.

The spelling of 499564497569 in words is "four hundred ninety-nine billion, five hundred sixty-four million, four hundred ninety-seven thousand, five hundred sixty-nine".