522323243420 has 72 divisors (see below), whose sum is σ = 1208278076544. Its totient is φ = 189523312000.

The previous prime is 522323243417. The next prime is 522323243443. The reversal of 522323243420 is 24342323225.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 881525 + ... + 1349715.

It is an arithmetic number, because the mean of its divisors is an integer number (16781639952).

Almost surely, 2^522323243420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522323243420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604139038272).

522323243420 is an abundant number, since it is smaller than the sum of its proper divisors (685954833124).

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

522323243420 is a wasteful number, since it uses less digits than its factorization.

522323243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468683 (or 468670 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 522323243420 its reverse (24342323225), we get a palindrome (546665566645).

The spelling of 522323243420 in words is "five hundred twenty-two billion, three hundred twenty-three million, two hundred forty-three thousand, four hundred twenty".