500005368491 has 4 divisors (see below), whose sum is σ = 500356744032. Its totient is φ = 499653992952.

The previous prime is 500005368479. The next prime is 500005368497. The reversal of 500005368491 is 194863500005.

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

It is a cyclic number.

It is not a de Polignac number, because 500005368491 - 2⁶ = 500005368427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500005368497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175685636 + ... + 175688481.

It is an arithmetic number, because the mean of its divisors is an integer number (125089186008).

Almost surely, 2^500005368491 is an apocalyptic number.

500005368491 is a deficient number, since it is larger than the sum of its proper divisors (351375541).

500005368491 is a wasteful number, since it uses less digits than its factorization.

500005368491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351375540.

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 500005368491 its reverse (194863500005), we get a palindrome (694868868496).

The spelling of 500005368491 in words is "five hundred billion, five million, three hundred sixty-eight thousand, four hundred ninety-one".