505352342440 has 96 divisors (see below), whose sum is σ = 1252358664480. Its totient is φ = 183389360000.

The previous prime is 505352342413. The next prime is 505352342441. The reversal of 505352342440 is 44243253505.

It is a self number, because there is not a number n which added to its sum of digits gives 505352342440.

It is not an unprimeable number, because it can be changed into a prime (505352342441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2270115 + ... + 2482765.

It is an arithmetic number, because the mean of its divisors is an integer number (13045402755).

Almost surely, 2^505352342440 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 505352342440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626179332240).

505352342440 is an abundant number, since it is smaller than the sum of its proper divisors (747006322040).

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

505352342440 is a wasteful number, since it uses less digits than its factorization.

505352342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213175 (or 213160 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 505352342440 its reverse (44243253505), we get a palindrome (549595595945).

The spelling of 505352342440 in words is "five hundred five billion, three hundred fifty-two million, three hundred forty-two thousand, four hundred forty".