499254284885665 has 4 divisors (see below), whose sum is σ = 599105141862804. Its totient is φ = 399403427908528.

The previous prime is 499254284885651. The next prime is 499254284885683. The reversal of 499254284885665 is 566588482452994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88835469516049 + 410418815369616 = 9425257^2 + 20258796^2 .

It is a cyclic number.

It is not a de Polignac number, because 499254284885665 - 2³¹ = 499252137402017 is a prime.

It is a Smith number, since the sum of its digits (85) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49925428488562 + ... + 49925428488571.

It is an arithmetic number, because the mean of its divisors is an integer number (149776285465701).

Almost surely, 2^{499254284885665} is an apocalyptic number.

It is an amenable number.

499254284885665 is a deficient number, since it is larger than the sum of its proper divisors (99850856977139).

499254284885665 is an equidigital number, since it uses as much as digits as its factorization.

499254284885665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99850856977138.

The product of its digits is 47775744000, while the sum is 85.

The spelling of 499254284885665 in words is "four hundred ninety-nine trillion, two hundred fifty-four billion, two hundred eighty-four million, eight hundred eighty-five thousand, six hundred sixty-five".