499666667009 has 2 divisors, whose sum is σ = 499666667010. Its totient is φ = 499666667008.

The previous prime is 499666666991. The next prime is 499666667033. The reversal of 499666667009 is 900766666994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260304040000 + 239362627009 = 510200^2 + 489247^2 .

It is a cyclic number.

It is not a de Polignac number, because 499666667009 - 2⁸ = 499666666753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 499666667009.

It is not a weakly prime, because it can be changed into another prime (499666667089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249833333504 + 249833333505.

It is an arithmetic number, because the mean of its divisors is an integer number (249833333505).

Almost surely, 2^499666667009 is an apocalyptic number.

It is an amenable number.

499666667009 is a deficient number, since it is larger than the sum of its proper divisors (1).

499666667009 is an equidigital number, since it uses as much as digits as its factorization.

499666667009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158723712, while the sum is 68.

The spelling of 499666667009 in words is "four hundred ninety-nine billion, six hundred sixty-six million, six hundred sixty-seven thousand, nine".