500261804490 has 128 divisors (see below), whose sum is σ = 1457051701248. Its totient is φ = 107308938240.

The previous prime is 500261804467. The next prime is 500261804491. The reversal of 500261804490 is 94408162005.

It is not an unprimeable number, because it can be changed into a prime (500261804491) 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 63 ways as a sum of consecutive naturals, for example, 1036875 + ... + 1440705.

It is an arithmetic number, because the mean of its divisors is an integer number (11383216416).

Almost surely, 2^500261804490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500261804490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728525850624).

500261804490 is an abundant number, since it is smaller than the sum of its proper divisors (956789896758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

500261804490 is a wasteful number, since it uses less digits than its factorization.

500261804490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404212.

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 500261804490 its reverse (94408162005), we get a palindrome (594669966495).

The spelling of 500261804490 in words is "five hundred billion, two hundred sixty-one million, eight hundred four thousand, four hundred ninety".