502858887491 has 4 divisors (see below), whose sum is σ = 516449668272. Its totient is φ = 489268106712.

The previous prime is 502858887481. The next prime is 502858887499. The reversal of 502858887491 is 194788858205.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-502858887491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (502858887499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6795390335 + ... + 6795390408.

It is an arithmetic number, because the mean of its divisors is an integer number (129112417068).

Almost surely, 2^502858887491 is an apocalyptic number.

502858887491 is a deficient number, since it is larger than the sum of its proper divisors (13590780781).

502858887491 is a wasteful number, since it uses less digits than its factorization.

502858887491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13590780780.

The product of its (nonzero) digits is 51609600, while the sum is 65.

The spelling of 502858887491 in words is "five hundred two billion, eight hundred fifty-eight million, eight hundred eighty-seven thousand, four hundred ninety-one".