508788968689 has 4 divisors (see below), whose sum is σ = 511425181156. Its totient is φ = 506152756224.

The previous prime is 508788968683. The next prime is 508788968693. The reversal of 508788968689 is 986869887805.

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 214382890225 + 294406078464 = 463015^2 + 542592^2 .

It is a cyclic number.

It is not a de Polignac number, because 508788968689 - 2⁵ = 508788968657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (508788968683) by changing a digit.

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, 1318105944 + ... + 1318106329.

It is an arithmetic number, because the mean of its divisors is an integer number (127856295289).

Almost surely, 2^508788968689 is an apocalyptic number.

It is an amenable number.

508788968689 is a deficient number, since it is larger than the sum of its proper divisors (2636212467).

508788968689 is a wasteful number, since it uses less digits than its factorization.

508788968689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636212466.

The product of its (nonzero) digits is 3344302080, while the sum is 82.

The spelling of 508788968689 in words is "five hundred eight billion, seven hundred eighty-eight million, nine hundred sixty-eight thousand, six hundred eighty-nine".