499642263647729 has 2 divisors, whose sum is σ = 499642263647730. Its totient is φ = 499642263647728.

The previous prime is 499642263647719. The next prime is 499642263647749. The reversal of 499642263647729 is 927746362246994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299945232431329 + 199697031216400 = 17318927^2 + 14131420^2 .

It is a cyclic number.

It is not a de Polignac number, because 499642263647729 - 2³⁶ = 499573544170993 is a prime.

It is a super-2 number, since 2×499642263647729² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (499642263647719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249821131823864 + 249821131823865.

It is an arithmetic number, because the mean of its divisors is an integer number (249821131823865).

Almost surely, 2^{499642263647729} is an apocalyptic number.

It is an amenable number.

499642263647729 is a deficient number, since it is larger than the sum of its proper divisors (1).

499642263647729 is an equidigital number, since it uses as much as digits as its factorization.

499642263647729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11851370496, while the sum is 80.

The spelling of 499642263647729 in words is "four hundred ninety-nine trillion, six hundred forty-two billion, two hundred sixty-three million, six hundred forty-seven thousand, seven hundred twenty-nine".