505363634442 has 64 divisors (see below), whose sum is σ = 1149217632000. Its totient is φ = 164554213824.

The previous prime is 505363634407. The next prime is 505363634443. The reversal of 505363634442 is 244436363505.

505363634442 is a `hidden beast` number, since 5 + 0 + 5 + 3 + 6 + 3 + 634 + 4 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (505363634443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269859 + ... + 1040937.

It is an arithmetic number, because the mean of its divisors is an integer number (17956525500).

Almost surely, 2^505363634442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505363634442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574608816000).

505363634442 is an abundant number, since it is smaller than the sum of its proper divisors (643853997558).

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

505363634442 is a wasteful number, since it uses less digits than its factorization.

505363634442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771372 (or 771366 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 45.

Adding to 505363634442 its reverse (244436363505), we get a palindrome (749799997947).

The spelling of 505363634442 in words is "five hundred five billion, three hundred sixty-three million, six hundred thirty-four thousand, four hundred forty-two".