500018685523 has 8 divisors (see below), whose sum is σ = 572546763360. Its totient is φ = 427764816960.

The previous prime is 500018685457. The next prime is 500018685541. The reversal of 500018685523 is 325586810005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 500018685523 - 2²¹ = 500016588371 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 500018685523.

It is not an unprimeable number, because it can be changed into a prime (500018685583) 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 7 ways as a sum of consecutive naturals, for example, 68548408 + ... + 68555701.

It is an arithmetic number, because the mean of its divisors is an integer number (71568345420).

Almost surely, 2^500018685523 is an apocalyptic number.

500018685523 is a deficient number, since it is larger than the sum of its proper divisors (72528077837).

500018685523 is a wasteful number, since it uses less digits than its factorization.

500018685523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137104637.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 500018685523 in words is "five hundred billion, eighteen million, six hundred eighty-five thousand, five hundred twenty-three".